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Finding the Fourth Proportional to 299,720.20, 449,753.10 and 112,865.80

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Solution

The fourth proportional to 299,720.20, 449,753.10 and 112,865.80 is: 169,363.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,720.20 : 449,753.10 = 112,865.80 : x
  2. Step 2: Convert to fraction form
    299,720.20/449,753.10 = 112,865.80/x
  3. Step 3: Cross multiply
    299,720.20x = 449,753.10 × 112,865.80
  4. Step 4: Simplify right side
    299,720.20x = 50,761,743,433.98
  5. Step 5: Solve for x
    x = 50,761,743,433.98/299,720.20
  6. Step 6: Final answer
    x = 169,363.77

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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.