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Finding the Third Proportional to 166,719 and 218,974.50

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Solution

The third proportional to 166,719 and 218,974.50 is: 287,608.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,719 : 218,974.50 = 218,974.50 : x
  2. Step 2: Convert to fraction form
    166,719/218,974.50 = 218,974.50/x
  3. Step 3: Cross multiply
    166,719x = 218,974.50 × 218,974.50
  4. Step 4: Simplify right side
    166,719x = 47,949,831,650.25
  5. Step 5: Solve for x
    x = 47,949,831,650.25/166,719
  6. Step 6: Final answer
    x = 287,608.68

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.