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Finding the Third Proportional to 172,916 and 259,374

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Solution

The third proportional to 172,916 and 259,374 is: 389,061

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,916 : 259,374 = 259,374 : x
  2. Step 2: Convert to fraction form
    172,916/259,374 = 259,374/x
  3. Step 3: Cross multiply
    172,916x = 259,374 × 259,374
  4. Step 4: Simplify right side
    172,916x = 67,274,871,876
  5. Step 5: Solve for x
    x = 67,274,871,876/172,916
  6. Step 6: Final answer
    x = 389,061

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.