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Finding the Third Proportional to 97,320 and 209,643

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Solution

The third proportional to 97,320 and 209,643 is: 451,604.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,320 : 209,643 = 209,643 : x
  2. Step 2: Convert to fraction form
    97,320/209,643 = 209,643/x
  3. Step 3: Cross multiply
    97,320x = 209,643 × 209,643
  4. Step 4: Simplify right side
    97,320x = 43,950,187,449
  5. Step 5: Solve for x
    x = 43,950,187,449/97,320
  6. Step 6: Final answer
    x = 451,604.89

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.