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Finding the Third Proportional to 137,701.50 and 291,939

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Solution

The third proportional to 137,701.50 and 291,939 is: 618,935.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,701.50 : 291,939 = 291,939 : x
  2. Step 2: Convert to fraction form
    137,701.50/291,939 = 291,939/x
  3. Step 3: Cross multiply
    137,701.50x = 291,939 × 291,939
  4. Step 4: Simplify right side
    137,701.50x = 85,228,379,721
  5. Step 5: Solve for x
    x = 85,228,379,721/137,701.50
  6. Step 6: Final answer
    x = 618,935.74

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.