Home / 426,154.38-639,065.34-159,769.50

Finding the Fourth Proportional to 426,154.38, 639,065.34 and 159,769.50

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Solution

The fourth proportional to 426,154.38, 639,065.34 and 159,769.50 is: 239,591.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,154.38 : 639,065.34 = 159,769.50 : x
  2. Step 2: Convert to fraction form
    426,154.38/639,065.34 = 159,769.50/x
  3. Step 3: Cross multiply
    426,154.38x = 639,065.34 × 159,769.50
  4. Step 4: Simplify right side
    426,154.38x = 102,103,149,839.13
  5. Step 5: Solve for x
    x = 102,103,149,839.13/426,154.38
  6. Step 6: Final answer
    x = 239,591.93

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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.