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Finding the Fourth Proportional to 359,400.80, 539,101.20 and 219,432.80

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Solution

The fourth proportional to 359,400.80, 539,101.20 and 219,432.80 is: 329,149.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,400.80 : 539,101.20 = 219,432.80 : x
  2. Step 2: Convert to fraction form
    359,400.80/539,101.20 = 219,432.80/x
  3. Step 3: Cross multiply
    359,400.80x = 539,101.20 × 219,432.80
  4. Step 4: Simplify right side
    359,400.80x = 118,296,485,799.36
  5. Step 5: Solve for x
    x = 118,296,485,799.36/359,400.80
  6. Step 6: Final answer
    x = 329,149.20

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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.