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Finding the Fourth Proportional to 386,486, 533,169.24 and 273,371.12

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Solution

The fourth proportional to 386,486, 533,169.24 and 273,371.12 is: 377,123.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,486 : 533,169.24 = 273,371.12 : x
  2. Step 2: Convert to fraction form
    386,486/533,169.24 = 273,371.12/x
  3. Step 3: Cross multiply
    386,486x = 533,169.24 × 273,371.12
  4. Step 4: Simplify right side
    386,486x = 145,753,072,288.35
  5. Step 5: Solve for x
    x = 145,753,072,288.35/386,486
  6. Step 6: Final answer
    x = 377,123.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.