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Finding the Third Proportional to 156,939 and 201,504

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Solution

The third proportional to 156,939 and 201,504 is: 258,723.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,939 : 201,504 = 201,504 : x
  2. Step 2: Convert to fraction form
    156,939/201,504 = 201,504/x
  3. Step 3: Cross multiply
    156,939x = 201,504 × 201,504
  4. Step 4: Simplify right side
    156,939x = 40,603,862,016
  5. Step 5: Solve for x
    x = 40,603,862,016/156,939
  6. Step 6: Final answer
    x = 258,723.85

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.