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Finding the Third Proportional to 103,660 and 217,764

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Solution

The third proportional to 103,660 and 217,764 is: 457,468.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,660 : 217,764 = 217,764 : x
  2. Step 2: Convert to fraction form
    103,660/217,764 = 217,764/x
  3. Step 3: Cross multiply
    103,660x = 217,764 × 217,764
  4. Step 4: Simplify right side
    103,660x = 47,421,159,696
  5. Step 5: Solve for x
    x = 47,421,159,696/103,660
  6. Step 6: Final answer
    x = 457,468.26

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.