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Finding the Fourth Proportional to 449,140.80, 673,711.20 and 133,556.70

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Solution

The fourth proportional to 449,140.80, 673,711.20 and 133,556.70 is: 200,335.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,140.80 : 673,711.20 = 133,556.70 : x
  2. Step 2: Convert to fraction form
    449,140.80/673,711.20 = 133,556.70/x
  3. Step 3: Cross multiply
    449,140.80x = 673,711.20 × 133,556.70
  4. Step 4: Simplify right side
    449,140.80x = 89,978,644,625.04
  5. Step 5: Solve for x
    x = 89,978,644,625.04/449,140.80
  6. Step 6: Final answer
    x = 200,335.05

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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.