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Finding the Fourth Proportional to 426,180.79, 639,104.98 and 159,796.15

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Solution

The fourth proportional to 426,180.79, 639,104.98 and 159,796.15 is: 239,631.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,180.79 : 639,104.98 = 159,796.15 : x
  2. Step 2: Convert to fraction form
    426,180.79/639,104.98 = 159,796.15/x
  3. Step 3: Cross multiply
    426,180.79x = 639,104.98 × 159,796.15
  4. Step 4: Simplify right side
    426,180.79x = 102,126,515,249.83
  5. Step 5: Solve for x
    x = 102,126,515,249.83/426,180.79
  6. Step 6: Final answer
    x = 239,631.91

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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.