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Finding the Fourth Proportional to 359,399,194.60, 539,098,791.90 and 345,290,420.20

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Solution

The fourth proportional to 359,399,194.60, 539,098,791.90 and 345,290,420.20 is: 517,935,630.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,399,194.60 : 539,098,791.90 = 345,290,420.20 : x
  2. Step 2: Convert to fraction form
    359,399,194.60/539,098,791.90 = 345,290,420.20/x
  3. Step 3: Cross multiply
    359,399,194.60x = 539,098,791.90 × 345,290,420.20
  4. Step 4: Simplify right side
    359,399,194.60x = 186,145,648,384,463,328
  5. Step 5: Solve for x
    x = 186,145,648,384,463,328/359,399,194.60
  6. Step 6: Final answer
    x = 517,935,630.30

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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.