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Finding the Third Proportional to 135,382 and 198,456

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Solution

The third proportional to 135,382 and 198,456 is: 290,915.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,382 : 198,456 = 198,456 : x
  2. Step 2: Convert to fraction form
    135,382/198,456 = 198,456/x
  3. Step 3: Cross multiply
    135,382x = 198,456 × 198,456
  4. Step 4: Simplify right side
    135,382x = 39,384,783,936
  5. Step 5: Solve for x
    x = 39,384,783,936/135,382
  6. Step 6: Final answer
    x = 290,915.96

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.