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Finding the Fourth Proportional to 299,691.20, 449,306.40 and 168,363.20

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Solution

The fourth proportional to 299,691.20, 449,306.40 and 168,363.20 is: 252,415.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,691.20 : 449,306.40 = 168,363.20 : x
  2. Step 2: Convert to fraction form
    299,691.20/449,306.40 = 168,363.20/x
  3. Step 3: Cross multiply
    299,691.20x = 449,306.40 × 168,363.20
  4. Step 4: Simplify right side
    299,691.20x = 75,646,663,284.48
  5. Step 5: Solve for x
    x = 75,646,663,284.48/299,691.20
  6. Step 6: Final answer
    x = 252,415.36

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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.