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Finding the Fourth Proportional to 425,316.27, 638,099.15 and 125,804.73

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Solution

The fourth proportional to 425,316.27, 638,099.15 and 125,804.73 is: 188,743.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,316.27 : 638,099.15 = 125,804.73 : x
  2. Step 2: Convert to fraction form
    425,316.27/638,099.15 = 125,804.73/x
  3. Step 3: Cross multiply
    425,316.27x = 638,099.15 × 125,804.73
  4. Step 4: Simplify right side
    425,316.27x = 80,275,890,649.96
  5. Step 5: Solve for x
    x = 80,275,890,649.96/425,316.27
  6. Step 6: Final answer
    x = 188,743.99

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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.