Home / 381,516.48-572,378.40-132,217.92

Finding the Fourth Proportional to 381,516.48, 572,378.40 and 132,217.92

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Solution

The fourth proportional to 381,516.48, 572,378.40 and 132,217.92 is: 198,362.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,516.48 : 572,378.40 = 132,217.92 : x
  2. Step 2: Convert to fraction form
    381,516.48/572,378.40 = 132,217.92/x
  3. Step 3: Cross multiply
    381,516.48x = 572,378.40 × 132,217.92
  4. Step 4: Simplify right side
    381,516.48x = 75,678,681,500.93
  5. Step 5: Solve for x
    x = 75,678,681,500.93/381,516.48
  6. Step 6: Final answer
    x = 198,362.81

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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.