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Finding the Fourth Proportional to 426,101.38, 639,127 and 159,839.60

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Solution

The fourth proportional to 426,101.38, 639,127 and 159,839.60 is: 239,750.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,101.38 : 639,127 = 159,839.60 : x
  2. Step 2: Convert to fraction form
    426,101.38/639,127 = 159,839.60/x
  3. Step 3: Cross multiply
    426,101.38x = 639,127 × 159,839.60
  4. Step 4: Simplify right side
    426,101.38x = 102,157,804,029.20
  5. Step 5: Solve for x
    x = 102,157,804,029.20/426,101.38
  6. Step 6: Final answer
    x = 239,750.00

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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.