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Finding the Fourth Proportional to 408,098.58, 612,149.30 and 123,791.58

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Solution

The fourth proportional to 408,098.58, 612,149.30 and 123,791.58 is: 185,687.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,098.58 : 612,149.30 = 123,791.58 : x
  2. Step 2: Convert to fraction form
    408,098.58/612,149.30 = 123,791.58/x
  3. Step 3: Cross multiply
    408,098.58x = 612,149.30 × 123,791.58
  4. Step 4: Simplify right side
    408,098.58x = 75,778,930,263.79
  5. Step 5: Solve for x
    x = 75,778,930,263.79/408,098.58
  6. Step 6: Final answer
    x = 185,687.81

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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.