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Finding the Third Proportional to 136,422 and 210,467

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Solution

The third proportional to 136,422 and 210,467 is: 324,700.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,422 : 210,467 = 210,467 : x
  2. Step 2: Convert to fraction form
    136,422/210,467 = 210,467/x
  3. Step 3: Cross multiply
    136,422x = 210,467 × 210,467
  4. Step 4: Simplify right side
    136,422x = 44,296,358,089
  5. Step 5: Solve for x
    x = 44,296,358,089/136,422
  6. Step 6: Final answer
    x = 324,700.99

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.