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Finding the Fourth Proportional to 359,590.20, 539,385.30 and 247,615.80

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Solution

The fourth proportional to 359,590.20, 539,385.30 and 247,615.80 is: 371,423.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,590.20 : 539,385.30 = 247,615.80 : x
  2. Step 2: Convert to fraction form
    359,590.20/539,385.30 = 247,615.80/x
  3. Step 3: Cross multiply
    359,590.20x = 539,385.30 × 247,615.80
  4. Step 4: Simplify right side
    359,590.20x = 133,560,322,567.74
  5. Step 5: Solve for x
    x = 133,560,322,567.74/359,590.20
  6. Step 6: Final answer
    x = 371,423.70

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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.