I assume you got a soil test and are trying to match the recommendations? You don't really need to match that exactly. Most lawn fertilizers are something like 25-1-4. A few shelves down, you will find 10-10-10. If you are going to fertilize 4 times in a year, you could use the standard fertilizer for 3 times and the 10-10-10 once. The net result with be N-P-K in a high, low, medium ratio like you are looking for.

Also, most companies "winterizer" fertilizer is about that ratio, but you won't be able to find that until fall. You might want to buy a couple extra bags this fall and use that for next year.

Also, if you are open to organic fertilizers, most of the grain based ones are in the 4-1-2 ballpark. That is pretty close to the ratio you are looking for.