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Finding the Fourth Proportional to 425,519.47, 638,295.40 and 159,251.95

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Solution

The fourth proportional to 425,519.47, 638,295.40 and 159,251.95 is: 238,883.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,519.47 : 638,295.40 = 159,251.95 : x
  2. Step 2: Convert to fraction form
    425,519.47/638,295.40 = 159,251.95/x
  3. Step 3: Cross multiply
    425,519.47x = 638,295.40 × 159,251.95
  4. Step 4: Simplify right side
    425,519.47x = 101,649,783,536.42
  5. Step 5: Solve for x
    x = 101,649,783,536.42/425,519.47
  6. Step 6: Final answer
    x = 238,883.98

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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.