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Finding the Fourth Proportional to 165,086.80, 247,630.20 and 155,245.30

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Solution

The fourth proportional to 165,086.80, 247,630.20 and 155,245.30 is: 232,867.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,086.80 : 247,630.20 = 155,245.30 : x
  2. Step 2: Convert to fraction form
    165,086.80/247,630.20 = 155,245.30/x
  3. Step 3: Cross multiply
    165,086.80x = 247,630.20 × 155,245.30
  4. Step 4: Simplify right side
    165,086.80x = 38,443,424,688.06
  5. Step 5: Solve for x
    x = 38,443,424,688.06/165,086.80
  6. Step 6: Final answer
    x = 232,867.95

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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.