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Finding the Third Proportional to 70,422 and 153,906

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Solution

The third proportional to 70,422 and 153,906 is: 336,358.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,422 : 153,906 = 153,906 : x
  2. Step 2: Convert to fraction form
    70,422/153,906 = 153,906/x
  3. Step 3: Cross multiply
    70,422x = 153,906 × 153,906
  4. Step 4: Simplify right side
    70,422x = 23,687,056,836
  5. Step 5: Solve for x
    x = 23,687,056,836/70,422
  6. Step 6: Final answer
    x = 336,358.76

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.