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Finding the Third Proportional to 201,067 and 312,625

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Solution

The third proportional to 201,067 and 312,625 is: 486,078.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,067 : 312,625 = 312,625 : x
  2. Step 2: Convert to fraction form
    201,067/312,625 = 312,625/x
  3. Step 3: Cross multiply
    201,067x = 312,625 × 312,625
  4. Step 4: Simplify right side
    201,067x = 97,734,390,625
  5. Step 5: Solve for x
    x = 97,734,390,625/201,067
  6. Step 6: Final answer
    x = 486,078.72

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.