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Finding the Third Proportional to 172,120 and 371,432

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Solution

The third proportional to 172,120 and 371,432 is: 801,543.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,120 : 371,432 = 371,432 : x
  2. Step 2: Convert to fraction form
    172,120/371,432 = 371,432/x
  3. Step 3: Cross multiply
    172,120x = 371,432 × 371,432
  4. Step 4: Simplify right side
    172,120x = 137,961,730,624
  5. Step 5: Solve for x
    x = 137,961,730,624/172,120
  6. Step 6: Final answer
    x = 801,543.87

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.