P:Q:R=2:1:2P: Q: R=\sqrt{2}: 1: 2P:Q:R=2:1:2
P:Q:R=2:1:2\mathrm{P}: \mathrm{Q}: \mathrm{R}=2: 1: \sqrt{2}P:Q:R=2:1:2
P:Q:R=3:1:2P: Q: R=3: 1: \sqrt{2}P:Q:R=3:1:2
P:Q:R=3:1:2P: Q: R=\sqrt{3}: 1: 2P:Q:R=3:1:2