Take a bus from Jinan to Dongying. If you sit at the connecting station opposite the railway station, it's around 40 yuan. If you take the Yuji bus or the Yellow River express bus at Jinan coach station, it's about 60 yuan. It will arrive in about three hours. From 6: 00 to 18: 30, every 30 minutes.
Generally, trains stop in Guangrao, where there is no bus stop, so you can only take the bus from Jinan to Dongying.