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Finding the Fourth Proportional to 252,079.26, 347,876.68 and 138,909.30

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Solution

The fourth proportional to 252,079.26, 347,876.68 and 138,909.30 is: 191,698.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,079.26 : 347,876.68 = 138,909.30 : x
  2. Step 2: Convert to fraction form
    252,079.26/347,876.68 = 138,909.30/x
  3. Step 3: Cross multiply
    252,079.26x = 347,876.68 × 138,909.30
  4. Step 4: Simplify right side
    252,079.26x = 48,323,306,105.12
  5. Step 5: Solve for x
    x = 48,323,306,105.12/252,079.26
  6. Step 6: Final answer
    x = 191,698.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.