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Finding the Fourth Proportional to 299,617.80, 449,489.10 and 100,000.20

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Solution

The fourth proportional to 299,617.80, 449,489.10 and 100,000.20 is: 150,021.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,617.80 : 449,489.10 = 100,000.20 : x
  2. Step 2: Convert to fraction form
    299,617.80/449,489.10 = 100,000.20/x
  3. Step 3: Cross multiply
    299,617.80x = 449,489.10 × 100,000.20
  4. Step 4: Simplify right side
    299,617.80x = 44,948,999,897.82
  5. Step 5: Solve for x
    x = 44,948,999,897.82/299,617.80
  6. Step 6: Final answer
    x = 150,021.13

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1.5x scale

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.