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Finding the Fourth Proportional to 425,367.81, 638,162.42 and 159,149.16

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Solution

The fourth proportional to 425,367.81, 638,162.42 and 159,149.16 is: 238,765.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,367.81 : 638,162.42 = 159,149.16 : x
  2. Step 2: Convert to fraction form
    425,367.81/638,162.42 = 159,149.16/x
  3. Step 3: Cross multiply
    425,367.81x = 638,162.42 × 159,149.16
  4. Step 4: Simplify right side
    425,367.81x = 101,563,012,290.82
  5. Step 5: Solve for x
    x = 101,563,012,290.82/425,367.81
  6. Step 6: Final answer
    x = 238,765.16

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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.