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Finding the Third Proportional to 172,812 and 247,122

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Solution

The third proportional to 172,812 and 247,122 is: 353,385.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,812 : 247,122 = 247,122 : x
  2. Step 2: Convert to fraction form
    172,812/247,122 = 247,122/x
  3. Step 3: Cross multiply
    172,812x = 247,122 × 247,122
  4. Step 4: Simplify right side
    172,812x = 61,069,282,884
  5. Step 5: Solve for x
    x = 61,069,282,884/172,812
  6. Step 6: Final answer
    x = 353,385.66

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.