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Finding the Fourth Proportional to 299,217.31, 448,438.18 and 121,517.89

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Solution

The fourth proportional to 299,217.31, 448,438.18 and 121,517.89 is: 182,119.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,217.31 : 448,438.18 = 121,517.89 : x
  2. Step 2: Convert to fraction form
    299,217.31/448,438.18 = 121,517.89/x
  3. Step 3: Cross multiply
    299,217.31x = 448,438.18 × 121,517.89
  4. Step 4: Simplify right side
    299,217.31x = 54,493,261,429.04
  5. Step 5: Solve for x
    x = 54,493,261,429.04/299,217.31
  6. Step 6: Final answer
    x = 182,119.35

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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.