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Finding the Third Proportional to 138,197 and 301,408

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Solution

The third proportional to 138,197 and 301,408 is: 657,371.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,197 : 301,408 = 301,408 : x
  2. Step 2: Convert to fraction form
    138,197/301,408 = 301,408/x
  3. Step 3: Cross multiply
    138,197x = 301,408 × 301,408
  4. Step 4: Simplify right side
    138,197x = 90,846,782,464
  5. Step 5: Solve for x
    x = 90,846,782,464/138,197
  6. Step 6: Final answer
    x = 657,371.60

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.