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Finding the Third Proportional to 146,220 and 198,138

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Solution

The third proportional to 146,220 and 198,138 is: 268,490.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,220 : 198,138 = 198,138 : x
  2. Step 2: Convert to fraction form
    146,220/198,138 = 198,138/x
  3. Step 3: Cross multiply
    146,220x = 198,138 × 198,138
  4. Step 4: Simplify right side
    146,220x = 39,258,667,044
  5. Step 5: Solve for x
    x = 39,258,667,044/146,220
  6. Step 6: Final answer
    x = 268,490.41

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.