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Finding the Fourth Proportional to 449,475.80, 674,310.90 and 149,905.40

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Solution

The fourth proportional to 449,475.80, 674,310.90 and 149,905.40 is: 224,890.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,475.80 : 674,310.90 = 149,905.40 : x
  2. Step 2: Convert to fraction form
    449,475.80/674,310.90 = 149,905.40/x
  3. Step 3: Cross multiply
    449,475.80x = 674,310.90 × 149,905.40
  4. Step 4: Simplify right side
    449,475.80x = 101,082,845,188.86
  5. Step 5: Solve for x
    x = 101,082,845,188.86/449,475.80
  6. Step 6: Final answer
    x = 224,890.52

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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.