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Finding the Third Proportional to 90,828 and 197,208

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Solution

The third proportional to 90,828 and 197,208 is: 428,182.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,828 : 197,208 = 197,208 : x
  2. Step 2: Convert to fraction form
    90,828/197,208 = 197,208/x
  3. Step 3: Cross multiply
    90,828x = 197,208 × 197,208
  4. Step 4: Simplify right side
    90,828x = 38,890,995,264
  5. Step 5: Solve for x
    x = 38,890,995,264/90,828
  6. Step 6: Final answer
    x = 428,182.89

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.