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Finding the Third Proportional to 79,390.13 and 171,315

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Solution

The third proportional to 79,390.13 and 171,315 is: 369,678.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,390.13 : 171,315 = 171,315 : x
  2. Step 2: Convert to fraction form
    79,390.13/171,315 = 171,315/x
  3. Step 3: Cross multiply
    79,390.13x = 171,315 × 171,315
  4. Step 4: Simplify right side
    79,390.13x = 29,348,829,225
  5. Step 5: Solve for x
    x = 29,348,829,225/79,390.13
  6. Step 6: Final answer
    x = 369,678.59

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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.