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Finding the Third Proportional to 121,959.42 and 231,480.28

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Solution

The third proportional to 121,959.42 and 231,480.28 is: 439,352.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,959.42 : 231,480.28 = 231,480.28 : x
  2. Step 2: Convert to fraction form
    121,959.42/231,480.28 = 231,480.28/x
  3. Step 3: Cross multiply
    121,959.42x = 231,480.28 × 231,480.28
  4. Step 4: Simplify right side
    121,959.42x = 53,583,120,607.58
  5. Step 5: Solve for x
    x = 53,583,120,607.58/121,959.42
  6. Step 6: Final answer
    x = 439,352.04

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Why These Related Problems?

These problems maintain the same ratio (1.90) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.