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Finding the Third Proportional to 199,981 and 281,260

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Solution

The third proportional to 199,981 and 281,260 is: 395,573.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,981 : 281,260 = 281,260 : x
  2. Step 2: Convert to fraction form
    199,981/281,260 = 281,260/x
  3. Step 3: Cross multiply
    199,981x = 281,260 × 281,260
  4. Step 4: Simplify right side
    199,981x = 79,107,187,600
  5. Step 5: Solve for x
    x = 79,107,187,600/199,981
  6. Step 6: Final answer
    x = 395,573.52

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.