If you are comparing the aid an EU country gets vs the aid a US state gets.. You do not really need to do any PPP or currency conversion. Take the GDP, in loca

If you are comparing the aid an EU country gets vs the aid a US state gets.. You do not really need to do any PPP or currency conversion. Take the GDP, in local value, against the aid they receive, in local value. Then you have a percent, which you can compare between the two agnostic of PPP/currency/etc.