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Finding the Fourth Proportional to 247,964.70, 371,947.05 and 129,672.30

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Solution

The fourth proportional to 247,964.70, 371,947.05 and 129,672.30 is: 194,508.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,964.70 : 371,947.05 = 129,672.30 : x
  2. Step 2: Convert to fraction form
    247,964.70/371,947.05 = 129,672.30/x
  3. Step 3: Cross multiply
    247,964.70x = 371,947.05 × 129,672.30
  4. Step 4: Simplify right side
    247,964.70x = 48,231,229,451.72
  5. Step 5: Solve for x
    x = 48,231,229,451.72/247,964.70
  6. Step 6: Final answer
    x = 194,508.45

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1.5x scale

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.