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Finding the Fourth Proportional to 165,466.60, 247,616.70 and 115,311.40

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Solution

The fourth proportional to 165,466.60, 247,616.70 and 115,311.40 is: 172,560.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,466.60 : 247,616.70 = 115,311.40 : x
  2. Step 2: Convert to fraction form
    165,466.60/247,616.70 = 115,311.40/x
  3. Step 3: Cross multiply
    165,466.60x = 247,616.70 × 115,311.40
  4. Step 4: Simplify right side
    165,466.60x = 28,553,028,340.38
  5. Step 5: Solve for x
    x = 28,553,028,340.38/165,466.60
  6. Step 6: Final answer
    x = 172,560.68

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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.