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Finding the Fourth Proportional to 299,473.20, 449,080.20 and 121,921.20

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Solution

The fourth proportional to 299,473.20, 449,080.20 and 121,921.20 is: 182,829.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,473.20 : 449,080.20 = 121,921.20 : x
  2. Step 2: Convert to fraction form
    299,473.20/449,080.20 = 121,921.20/x
  3. Step 3: Cross multiply
    299,473.20x = 449,080.20 × 121,921.20
  4. Step 4: Simplify right side
    299,473.20x = 54,752,396,880.24
  5. Step 5: Solve for x
    x = 54,752,396,880.24/299,473.20
  6. Step 6: Final answer
    x = 182,829.04

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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.