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Finding the Third Proportional to 103,699 and 218,468

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Solution

The third proportional to 103,699 and 218,468 is: 460,257.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,699 : 218,468 = 218,468 : x
  2. Step 2: Convert to fraction form
    103,699/218,468 = 218,468/x
  3. Step 3: Cross multiply
    103,699x = 218,468 × 218,468
  4. Step 4: Simplify right side
    103,699x = 47,728,267,024
  5. Step 5: Solve for x
    x = 47,728,267,024/103,699
  6. Step 6: Final answer
    x = 460,257.74

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.