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Finding the Third Proportional to 138,600 and 293,760

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Solution

The third proportional to 138,600 and 293,760 is: 622,618.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,600 : 293,760 = 293,760 : x
  2. Step 2: Convert to fraction form
    138,600/293,760 = 293,760/x
  3. Step 3: Cross multiply
    138,600x = 293,760 × 293,760
  4. Step 4: Simplify right side
    138,600x = 86,294,937,600
  5. Step 5: Solve for x
    x = 86,294,937,600/138,600
  6. Step 6: Final answer
    x = 622,618.60

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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.