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Finding the Fourth Proportional to 299,728.80, 449,593.20 and 283,399.20

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Solution

The fourth proportional to 299,728.80, 449,593.20 and 283,399.20 is: 425,098.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,728.80 : 449,593.20 = 283,399.20 : x
  2. Step 2: Convert to fraction form
    299,728.80/449,593.20 = 283,399.20/x
  3. Step 3: Cross multiply
    299,728.80x = 449,593.20 × 283,399.20
  4. Step 4: Simplify right side
    299,728.80x = 127,414,353,205.44
  5. Step 5: Solve for x
    x = 127,414,353,205.44/299,728.80
  6. Step 6: Final answer
    x = 425,098.80

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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.