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Finding the Fourth Proportional to 449,140.70, 673,721.85 and 133,607.90

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Solution

The fourth proportional to 449,140.70, 673,721.85 and 133,607.90 is: 200,415.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,140.70 : 673,721.85 = 133,607.90 : x
  2. Step 2: Convert to fraction form
    449,140.70/673,721.85 = 133,607.90/x
  3. Step 3: Cross multiply
    449,140.70x = 673,721.85 × 133,607.90
  4. Step 4: Simplify right side
    449,140.70x = 90,014,561,562.62
  5. Step 5: Solve for x
    x = 90,014,561,562.62/449,140.70
  6. Step 6: Final answer
    x = 200,415.06

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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.