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Finding the Third Proportional to 101,212.50 and 217,995

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Solution

The third proportional to 101,212.50 and 217,995 is: 469,525.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,212.50 : 217,995 = 217,995 : x
  2. Step 2: Convert to fraction form
    101,212.50/217,995 = 217,995/x
  3. Step 3: Cross multiply
    101,212.50x = 217,995 × 217,995
  4. Step 4: Simplify right side
    101,212.50x = 47,521,820,025
  5. Step 5: Solve for x
    x = 47,521,820,025/101,212.50
  6. Step 6: Final answer
    x = 469,525.21

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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.