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Finding the Third Proportional to 129,378 and 193,268

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Solution

The third proportional to 129,378 and 193,268 is: 288,708.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,378 : 193,268 = 193,268 : x
  2. Step 2: Convert to fraction form
    129,378/193,268 = 193,268/x
  3. Step 3: Cross multiply
    129,378x = 193,268 × 193,268
  4. Step 4: Simplify right side
    129,378x = 37,352,519,824
  5. Step 5: Solve for x
    x = 37,352,519,824/129,378
  6. Step 6: Final answer
    x = 288,708.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.