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Finding the Fourth Proportional to 425,519.34, 638,295.21 and 159,251.82

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Solution

The fourth proportional to 425,519.34, 638,295.21 and 159,251.82 is: 238,883.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,519.34 : 638,295.21 = 159,251.82 : x
  2. Step 2: Convert to fraction form
    425,519.34/638,295.21 = 159,251.82/x
  3. Step 3: Cross multiply
    425,519.34x = 638,295.21 × 159,251.82
  4. Step 4: Simplify right side
    425,519.34x = 101,649,673,889.78
  5. Step 5: Solve for x
    x = 101,649,673,889.78/425,519.34
  6. Step 6: Final answer
    x = 238,883.79

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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.