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Finding the Third Proportional to 79,883 and 172,220

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Solution

The third proportional to 79,883 and 172,220 is: 371,289.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,883 : 172,220 = 172,220 : x
  2. Step 2: Convert to fraction form
    79,883/172,220 = 172,220/x
  3. Step 3: Cross multiply
    79,883x = 172,220 × 172,220
  4. Step 4: Simplify right side
    79,883x = 29,659,728,400
  5. Step 5: Solve for x
    x = 29,659,728,400/79,883
  6. Step 6: Final answer
    x = 371,289.62

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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.