Finding the Fourth Proportional to 315,924,904.20, 473,887,356.30 and 212,612,773.80
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Solution
The fourth proportional to 315,924,904.20, 473,887,356.30 and 212,612,773.80 is: 318,919,160.70
Step by Step Solution
- Step 1: Write the proportion equation
315,924,904.20 : 473,887,356.30 = 212,612,773.80 : x - Step 2: Convert to fraction form
315,924,904.20/473,887,356.30 = 212,612,773.80/x - Step 3: Cross multiply
315,924,904.20x = 473,887,356.30 × 212,612,773.80 - Step 4: Simplify right side
315,924,904.20x = 100,754,505,291,691,920 - Step 5: Solve for x
x = 100,754,505,291,691,920/315,924,904.20 - Step 6: Final answer
x = 318,919,160.70
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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.