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Finding the Fourth Proportional to 425,371.41, 638,115.45 and 188,708.85

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Solution

The fourth proportional to 425,371.41, 638,115.45 and 188,708.85 is: 283,089.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,371.41 : 638,115.45 = 188,708.85 : x
  2. Step 2: Convert to fraction form
    425,371.41/638,115.45 = 188,708.85/x
  3. Step 3: Cross multiply
    425,371.41x = 638,115.45 × 188,708.85
  4. Step 4: Simplify right side
    425,371.41x = 120,418,032,736.73
  5. Step 5: Solve for x
    x = 120,418,032,736.73/425,371.41
  6. Step 6: Final answer
    x = 283,089.15

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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.