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Finding the Fourth Proportional to 425,310.66, 637,978.31 and 159,020.33

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Solution

The fourth proportional to 425,310.66, 637,978.31 and 159,020.33 is: 238,535.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,310.66 : 637,978.31 = 159,020.33 : x
  2. Step 2: Convert to fraction form
    425,310.66/637,978.31 = 159,020.33/x
  3. Step 3: Cross multiply
    425,310.66x = 637,978.31 × 159,020.33
  4. Step 4: Simplify right side
    425,310.66x = 101,451,517,404.05
  5. Step 5: Solve for x
    x = 101,451,517,404.05/425,310.66
  6. Step 6: Final answer
    x = 238,535.09

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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.