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Finding the Fourth Proportional to 397,372.17, 548,356.91 and 225,301.71

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Solution

The fourth proportional to 397,372.17, 548,356.91 and 225,301.71 is: 310,906.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,372.17 : 548,356.91 = 225,301.71 : x
  2. Step 2: Convert to fraction form
    397,372.17/548,356.91 = 225,301.71/x
  3. Step 3: Cross multiply
    397,372.17x = 548,356.91 × 225,301.71
  4. Step 4: Simplify right side
    397,372.17x = 123,545,750,443.15
  5. Step 5: Solve for x
    x = 123,545,750,443.15/397,372.17
  6. Step 6: Final answer
    x = 310,906.90

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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.