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Finding the Third Proportional to 100,013.50 and 218,698.75

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Solution

The third proportional to 100,013.50 and 218,698.75 is: 478,226.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,013.50 : 218,698.75 = 218,698.75 : x
  2. Step 2: Convert to fraction form
    100,013.50/218,698.75 = 218,698.75/x
  3. Step 3: Cross multiply
    100,013.50x = 218,698.75 × 218,698.75
  4. Step 4: Simplify right side
    100,013.50x = 47,829,143,251.56
  5. Step 5: Solve for x
    x = 47,829,143,251.56/100,013.50
  6. Step 6: Final answer
    x = 478,226.87

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.