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Finding the Third Proportional to 138,192 and 292,991

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Solution

The third proportional to 138,192 and 292,991 is: 621,191.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,192 : 292,991 = 292,991 : x
  2. Step 2: Convert to fraction form
    138,192/292,991 = 292,991/x
  3. Step 3: Cross multiply
    138,192x = 292,991 × 292,991
  4. Step 4: Simplify right side
    138,192x = 85,843,726,081
  5. Step 5: Solve for x
    x = 85,843,726,081/138,192
  6. Step 6: Final answer
    x = 621,191.72

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.