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Finding the Fourth Proportional to 165,208.60, 247,812.90 and 156,679.30

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Solution

The fourth proportional to 165,208.60, 247,812.90 and 156,679.30 is: 235,018.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,208.60 : 247,812.90 = 156,679.30 : x
  2. Step 2: Convert to fraction form
    165,208.60/247,812.90 = 156,679.30/x
  3. Step 3: Cross multiply
    165,208.60x = 247,812.90 × 156,679.30
  4. Step 4: Simplify right side
    165,208.60x = 38,827,151,702.97
  5. Step 5: Solve for x
    x = 38,827,151,702.97/165,208.60
  6. Step 6: Final answer
    x = 235,018.95

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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.