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Finding the Third Proportional to 271,856.50 and 639,686.50

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Solution

The third proportional to 271,856.50 and 639,686.50 is: 1,505,201.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,856.50 : 639,686.50 = 639,686.50 : x
  2. Step 2: Convert to fraction form
    271,856.50/639,686.50 = 639,686.50/x
  3. Step 3: Cross multiply
    271,856.50x = 639,686.50 × 639,686.50
  4. Step 4: Simplify right side
    271,856.50x = 409,198,818,282.25
  5. Step 5: Solve for x
    x = 409,198,818,282.25/271,856.50
  6. Step 6: Final answer
    x = 1,505,201.52

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.