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Finding the Third Proportional to 269,434.50 and 422,659.50

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Solution

The third proportional to 269,434.50 and 422,659.50 is: 663,022.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,434.50 : 422,659.50 = 422,659.50 : x
  2. Step 2: Convert to fraction form
    269,434.50/422,659.50 = 422,659.50/x
  3. Step 3: Cross multiply
    269,434.50x = 422,659.50 × 422,659.50
  4. Step 4: Simplify right side
    269,434.50x = 178,641,052,940.25
  5. Step 5: Solve for x
    x = 178,641,052,940.25/269,434.50
  6. Step 6: Final answer
    x = 663,022.19

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.