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Finding the Fourth Proportional to 381,062.73, 571,622.04 and 128,341.92

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Solution

The fourth proportional to 381,062.73, 571,622.04 and 128,341.92 is: 192,522.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,062.73 : 571,622.04 = 128,341.92 : x
  2. Step 2: Convert to fraction form
    381,062.73/571,622.04 = 128,341.92/x
  3. Step 3: Cross multiply
    381,062.73x = 571,622.04 × 128,341.92
  4. Step 4: Simplify right side
    381,062.73x = 73,363,070,127.92
  5. Step 5: Solve for x
    x = 73,363,070,127.92/381,062.73
  6. Step 6: Final answer
    x = 192,522.29

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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.