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Finding the Third Proportional to 98,613.50 and 215,999

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Solution

The third proportional to 98,613.50 and 215,999 is: 473,115.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,613.50 : 215,999 = 215,999 : x
  2. Step 2: Convert to fraction form
    98,613.50/215,999 = 215,999/x
  3. Step 3: Cross multiply
    98,613.50x = 215,999 × 215,999
  4. Step 4: Simplify right side
    98,613.50x = 46,655,568,001
  5. Step 5: Solve for x
    x = 46,655,568,001/98,613.50
  6. Step 6: Final answer
    x = 473,115.43

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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.