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Finding the Third Proportional to 180,659.50 and 393,489.50

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Solution

The third proportional to 180,659.50 and 393,489.50 is: 857,048.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,659.50 : 393,489.50 = 393,489.50 : x
  2. Step 2: Convert to fraction form
    180,659.50/393,489.50 = 393,489.50/x
  3. Step 3: Cross multiply
    180,659.50x = 393,489.50 × 393,489.50
  4. Step 4: Simplify right side
    180,659.50x = 154,833,986,610.25
  5. Step 5: Solve for x
    x = 154,833,986,610.25/180,659.50
  6. Step 6: Final answer
    x = 857,048.68

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.