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Finding the Fourth Proportional to 299,819.20, 449,728.80 and 282,323.20

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Solution

The fourth proportional to 299,819.20, 449,728.80 and 282,323.20 is: 423,484.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,819.20 : 449,728.80 = 282,323.20 : x
  2. Step 2: Convert to fraction form
    299,819.20/449,728.80 = 282,323.20/x
  3. Step 3: Cross multiply
    299,819.20x = 449,728.80 × 282,323.20
  4. Step 4: Simplify right side
    299,819.20x = 126,968,873,948.16
  5. Step 5: Solve for x
    x = 126,968,873,948.16/299,819.20
  6. Step 6: Final answer
    x = 423,484.80

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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.