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Finding the Third Proportional to 91,980 and 197,258

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Solution

The third proportional to 91,980 and 197,258 is: 423,034.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,980 : 197,258 = 197,258 : x
  2. Step 2: Convert to fraction form
    91,980/197,258 = 197,258/x
  3. Step 3: Cross multiply
    91,980x = 197,258 × 197,258
  4. Step 4: Simplify right side
    91,980x = 38,910,718,564
  5. Step 5: Solve for x
    x = 38,910,718,564/91,980
  6. Step 6: Final answer
    x = 423,034.56

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.