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Finding the Fourth Proportional to 425,660.78, 587,415.92 and 234,681

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Solution

The fourth proportional to 425,660.78, 587,415.92 and 234,681 is: 323,862.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,660.78 : 587,415.92 = 234,681 : x
  2. Step 2: Convert to fraction form
    425,660.78/587,415.92 = 234,681/x
  3. Step 3: Cross multiply
    425,660.78x = 587,415.92 × 234,681
  4. Step 4: Simplify right side
    425,660.78x = 137,855,354,348.12
  5. Step 5: Solve for x
    x = 137,855,354,348.12/425,660.78
  6. Step 6: Final answer
    x = 323,862.01

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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.