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Finding the Fourth Proportional to 425,928, 638,704.89 and 159,501.66

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Solution

The fourth proportional to 425,928, 638,704.89 and 159,501.66 is: 239,182.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,928 : 638,704.89 = 159,501.66 : x
  2. Step 2: Convert to fraction form
    425,928/638,704.89 = 159,501.66/x
  3. Step 3: Cross multiply
    425,928x = 638,704.89 × 159,501.66
  4. Step 4: Simplify right side
    425,928x = 101,874,490,205.12
  5. Step 5: Solve for x
    x = 101,874,490,205.12/425,928
  6. Step 6: Final answer
    x = 239,182.42

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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.