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Finding the Fourth Proportional to 359,781.46, 539,573.60 and 135,124.50

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Solution

The fourth proportional to 359,781.46, 539,573.60 and 135,124.50 is: 202,649.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,781.46 : 539,573.60 = 135,124.50 : x
  2. Step 2: Convert to fraction form
    359,781.46/539,573.60 = 135,124.50/x
  3. Step 3: Cross multiply
    359,781.46x = 539,573.60 × 135,124.50
  4. Step 4: Simplify right side
    359,781.46x = 72,909,612,913.20
  5. Step 5: Solve for x
    x = 72,909,612,913.20/359,781.46
  6. Step 6: Final answer
    x = 202,649.72

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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.