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Finding the Fourth Proportional to 494,891.87, 742,331.33 and 120,918.11

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Solution

The fourth proportional to 494,891.87, 742,331.33 and 120,918.11 is: 181,375.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,891.87 : 742,331.33 = 120,918.11 : x
  2. Step 2: Convert to fraction form
    494,891.87/742,331.33 = 120,918.11/x
  3. Step 3: Cross multiply
    494,891.87x = 742,331.33 × 120,918.11
  4. Step 4: Simplify right side
    494,891.87x = 89,761,300,812.80
  5. Step 5: Solve for x
    x = 89,761,300,812.80/494,891.87
  6. Step 6: Final answer
    x = 181,375.58

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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.