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Finding the Fourth Proportional to 381,055.52, 571,679.39 and 268,954.68

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Solution

The fourth proportional to 381,055.52, 571,679.39 and 268,954.68 is: 403,499.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,055.52 : 571,679.39 = 268,954.68 : x
  2. Step 2: Convert to fraction form
    381,055.52/571,679.39 = 268,954.68/x
  3. Step 3: Cross multiply
    381,055.52x = 571,679.39 × 268,954.68
  4. Step 4: Simplify right side
    381,055.52x = 153,755,846,055.27
  5. Step 5: Solve for x
    x = 153,755,846,055.27/381,055.52
  6. Step 6: Final answer
    x = 403,499.86

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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.