Finding the Fourth Proportional to 315,924,923.70, 473,887,385.55 and 212,612,793.30
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Solution
The fourth proportional to 315,924,923.70, 473,887,385.55 and 212,612,793.30 is: 318,919,189.95
Step by Step Solution
- Step 1: Write the proportion equation
315,924,923.70 : 473,887,385.55 = 212,612,793.30 : x - Step 2: Convert to fraction form
315,924,923.70/473,887,385.55 = 212,612,793.30/x - Step 3: Cross multiply
315,924,923.70x = 473,887,385.55 × 212,612,793.30 - Step 4: Simplify right side
315,924,923.70x = 100,754,520,751,419,568 - Step 5: Solve for x
x = 100,754,520,751,419,568/315,924,923.70 - Step 6: Final answer
x = 318,919,189.95
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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.