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Finding the Third Proportional to 98,722 and 213,205

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Solution

The third proportional to 98,722 and 213,205 is: 460,448.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,722 : 213,205 = 213,205 : x
  2. Step 2: Convert to fraction form
    98,722/213,205 = 213,205/x
  3. Step 3: Cross multiply
    98,722x = 213,205 × 213,205
  4. Step 4: Simplify right side
    98,722x = 45,456,372,025
  5. Step 5: Solve for x
    x = 45,456,372,025/98,722
  6. Step 6: Final answer
    x = 460,448.25

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.