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Finding the Fourth Proportional to 359,781.62, 539,664.89 and 119,912.88

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Solution

The fourth proportional to 359,781.62, 539,664.89 and 119,912.88 is: 179,866.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,781.62 : 539,664.89 = 119,912.88 : x
  2. Step 2: Convert to fraction form
    359,781.62/539,664.89 = 119,912.88/x
  3. Step 3: Cross multiply
    359,781.62x = 539,664.89 × 119,912.88
  4. Step 4: Simplify right side
    359,781.62x = 64,712,770,595.22
  5. Step 5: Solve for x
    x = 64,712,770,595.22/359,781.62
  6. Step 6: Final answer
    x = 179,866.81

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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.