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Finding the Fourth Proportional to 361,498.60, 542,150.70 and 108,778.60

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Solution

The fourth proportional to 361,498.60, 542,150.70 and 108,778.60 is: 163,138.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,498.60 : 542,150.70 = 108,778.60 : x
  2. Step 2: Convert to fraction form
    361,498.60/542,150.70 = 108,778.60/x
  3. Step 3: Cross multiply
    361,498.60x = 542,150.70 × 108,778.60
  4. Step 4: Simplify right side
    361,498.60x = 58,974,394,135.02
  5. Step 5: Solve for x
    x = 58,974,394,135.02/361,498.60
  6. Step 6: Final answer
    x = 163,138.65

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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.