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Finding the Third Proportional to 102,640 and 220,560

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Solution

The third proportional to 102,640 and 220,560 is: 473,954.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,640 : 220,560 = 220,560 : x
  2. Step 2: Convert to fraction form
    102,640/220,560 = 220,560/x
  3. Step 3: Cross multiply
    102,640x = 220,560 × 220,560
  4. Step 4: Simplify right side
    102,640x = 48,646,713,600
  5. Step 5: Solve for x
    x = 48,646,713,600/102,640
  6. Step 6: Final answer
    x = 473,954.73

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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.