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Finding the Fourth Proportional to 381,471.55, 572,286.20 and 125,323.53

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Solution

The fourth proportional to 381,471.55, 572,286.20 and 125,323.53 is: 188,011.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,471.55 : 572,286.20 = 125,323.53 : x
  2. Step 2: Convert to fraction form
    381,471.55/572,286.20 = 125,323.53/x
  3. Step 3: Cross multiply
    381,471.55x = 572,286.20 × 125,323.53
  4. Step 4: Simplify right side
    381,471.55x = 71,720,926,754.29
  5. Step 5: Solve for x
    x = 71,720,926,754.29/381,471.55
  6. Step 6: Final answer
    x = 188,011.21

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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.