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Finding the Third Proportional to 100,021.50 and 218,016.56

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Solution

The third proportional to 100,021.50 and 218,016.56 is: 475,210.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,021.50 : 218,016.56 = 218,016.56 : x
  2. Step 2: Convert to fraction form
    100,021.50/218,016.56 = 218,016.56/x
  3. Step 3: Cross multiply
    100,021.50x = 218,016.56 × 218,016.56
  4. Step 4: Simplify right side
    100,021.50x = 47,531,221,524.32
  5. Step 5: Solve for x
    x = 47,531,221,524.32/100,021.50
  6. Step 6: Final answer
    x = 475,210.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.