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Finding the Third Proportional to 129,032 and 199,380

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Solution

The third proportional to 129,032 and 199,380 is: 308,081.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,032 : 199,380 = 199,380 : x
  2. Step 2: Convert to fraction form
    129,032/199,380 = 199,380/x
  3. Step 3: Cross multiply
    129,032x = 199,380 × 199,380
  4. Step 4: Simplify right side
    129,032x = 39,752,384,400
  5. Step 5: Solve for x
    x = 39,752,384,400/129,032
  6. Step 6: Final answer
    x = 308,081.60

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.