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Finding the Fourth Proportional to 381,758.45, 572,543.04 and 129,033.32

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Solution

The fourth proportional to 381,758.45, 572,543.04 and 129,033.32 is: 193,517.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,758.45 : 572,543.04 = 129,033.32 : x
  2. Step 2: Convert to fraction form
    381,758.45/572,543.04 = 129,033.32/x
  3. Step 3: Cross multiply
    381,758.45x = 572,543.04 × 129,033.32
  4. Step 4: Simplify right side
    381,758.45x = 73,877,126,431.38
  5. Step 5: Solve for x
    x = 73,877,126,431.38/381,758.45
  6. Step 6: Final answer
    x = 193,517.99

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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.