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Finding the Third Proportional to 87,399 and 191,646

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Solution

The third proportional to 87,399 and 191,646 is: 420,235.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,399 : 191,646 = 191,646 : x
  2. Step 2: Convert to fraction form
    87,399/191,646 = 191,646/x
  3. Step 3: Cross multiply
    87,399x = 191,646 × 191,646
  4. Step 4: Simplify right side
    87,399x = 36,728,189,316
  5. Step 5: Solve for x
    x = 36,728,189,316/87,399
  6. Step 6: Final answer
    x = 420,235.81

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.