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Finding the Third Proportional to 79,387 and 171,237

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Solution

The third proportional to 79,387 and 171,237 is: 369,356.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,387 : 171,237 = 171,237 : x
  2. Step 2: Convert to fraction form
    79,387/171,237 = 171,237/x
  3. Step 3: Cross multiply
    79,387x = 171,237 × 171,237
  4. Step 4: Simplify right side
    79,387x = 29,322,110,169
  5. Step 5: Solve for x
    x = 29,322,110,169/79,387
  6. Step 6: Final answer
    x = 369,356.57

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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.