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Finding the Fourth Proportional to 247,385.60, 341,428.78 and 156,750

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Solution

The fourth proportional to 247,385.60, 341,428.78 and 156,750 is: 216,338.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,385.60 : 341,428.78 = 156,750 : x
  2. Step 2: Convert to fraction form
    247,385.60/341,428.78 = 156,750/x
  3. Step 3: Cross multiply
    247,385.60x = 341,428.78 × 156,750
  4. Step 4: Simplify right side
    247,385.60x = 53,518,961,265.00
  5. Step 5: Solve for x
    x = 53,518,961,265.00/247,385.60
  6. Step 6: Final answer
    x = 216,338.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.