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Finding the Fourth Proportional to 425,960.31, 639,058.69 and 236,553.69

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Solution

The fourth proportional to 425,960.31, 639,058.69 and 236,553.69 is: 354,896.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,960.31 : 639,058.69 = 236,553.69 : x
  2. Step 2: Convert to fraction form
    425,960.31/639,058.69 = 236,553.69/x
  3. Step 3: Cross multiply
    425,960.31x = 639,058.69 × 236,553.69
  4. Step 4: Simplify right side
    425,960.31x = 151,171,690,654.68
  5. Step 5: Solve for x
    x = 151,171,690,654.68/425,960.31
  6. Step 6: Final answer
    x = 354,896.19

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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.