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Finding the Third Proportional to 98,707 and 217,090

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Solution

The third proportional to 98,707 and 217,090 is: 477,454.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,707 : 217,090 = 217,090 : x
  2. Step 2: Convert to fraction form
    98,707/217,090 = 217,090/x
  3. Step 3: Cross multiply
    98,707x = 217,090 × 217,090
  4. Step 4: Simplify right side
    98,707x = 47,128,068,100
  5. Step 5: Solve for x
    x = 47,128,068,100/98,707
  6. Step 6: Final answer
    x = 477,454.16

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.