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Finding the Third Proportional to 98,627 and 215,709

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Solution

The third proportional to 98,627 and 215,709 is: 471,781.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,627 : 215,709 = 215,709 : x
  2. Step 2: Convert to fraction form
    98,627/215,709 = 215,709/x
  3. Step 3: Cross multiply
    98,627x = 215,709 × 215,709
  4. Step 4: Simplify right side
    98,627x = 46,530,372,681
  5. Step 5: Solve for x
    x = 46,530,372,681/98,627
  6. Step 6: Final answer
    x = 471,781.28

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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.