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Finding the Fourth Proportional to 247,902.31, 371,905.71 and 129,541.87

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Solution

The fourth proportional to 247,902.31, 371,905.71 and 129,541.87 is: 194,340.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,902.31 : 371,905.71 = 129,541.87 : x
  2. Step 2: Convert to fraction form
    247,902.31/371,905.71 = 129,541.87/x
  3. Step 3: Cross multiply
    247,902.31x = 371,905.71 × 129,541.87
  4. Step 4: Simplify right side
    247,902.31x = 48,177,361,137.08
  5. Step 5: Solve for x
    x = 48,177,361,137.08/247,902.31
  6. Step 6: Final answer
    x = 194,340.11

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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.