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Finding the Third Proportional to 136,471 and 293,678

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Solution

The third proportional to 136,471 and 293,678 is: 631,978.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,471 : 293,678 = 293,678 : x
  2. Step 2: Convert to fraction form
    136,471/293,678 = 293,678/x
  3. Step 3: Cross multiply
    136,471x = 293,678 × 293,678
  4. Step 4: Simplify right side
    136,471x = 86,246,767,684
  5. Step 5: Solve for x
    x = 86,246,767,684/136,471
  6. Step 6: Final answer
    x = 631,978.72

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.