Finding the Fourth Proportional to 314,928,514.20, 472,392,771.30 and 288,143,887.80
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Solution
The fourth proportional to 314,928,514.20, 472,392,771.30 and 288,143,887.80 is: 432,215,831.70
Step by Step Solution
- Step 1: Write the proportion equation
314,928,514.20 : 472,392,771.30 = 288,143,887.80 : x - Step 2: Convert to fraction form
314,928,514.20/472,392,771.30 = 288,143,887.80/x - Step 3: Cross multiply
314,928,514.20x = 472,392,771.30 × 288,143,887.80 - Step 4: Simplify right side
314,928,514.20x = 136,117,089,690,998,272 - Step 5: Solve for x
x = 136,117,089,690,998,272/314,928,514.20 - Step 6: Final answer
x = 432,215,831.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.