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Finding the Fourth Proportional to 165,086.90, 247,630.35 and 155,245.40

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Solution

The fourth proportional to 165,086.90, 247,630.35 and 155,245.40 is: 232,868.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,086.90 : 247,630.35 = 155,245.40 : x
  2. Step 2: Convert to fraction form
    165,086.90/247,630.35 = 155,245.40/x
  3. Step 3: Cross multiply
    165,086.90x = 247,630.35 × 155,245.40
  4. Step 4: Simplify right side
    165,086.90x = 38,443,472,737.89
  5. Step 5: Solve for x
    x = 38,443,472,737.89/165,086.90
  6. Step 6: Final answer
    x = 232,868.10

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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.