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Finding the Fourth Proportional to 359,789.80, 539,586.20 and 135,132.88

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Solution

The fourth proportional to 359,789.80, 539,586.20 and 135,132.88 is: 202,662.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,789.80 : 539,586.20 = 135,132.88 : x
  2. Step 2: Convert to fraction form
    359,789.80/539,586.20 = 135,132.88/x
  3. Step 3: Cross multiply
    359,789.80x = 539,586.20 × 135,132.88
  4. Step 4: Simplify right side
    359,789.80x = 72,915,837,214.26
  5. Step 5: Solve for x
    x = 72,915,837,214.26/359,789.80
  6. Step 6: Final answer
    x = 202,662.32

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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.