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Finding the Third Proportional to 180,883.50 and 393,909

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Solution

The third proportional to 180,883.50 and 393,909 is: 857,813.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,883.50 : 393,909 = 393,909 : x
  2. Step 2: Convert to fraction form
    180,883.50/393,909 = 393,909/x
  3. Step 3: Cross multiply
    180,883.50x = 393,909 × 393,909
  4. Step 4: Simplify right side
    180,883.50x = 155,164,300,281
  5. Step 5: Solve for x
    x = 155,164,300,281/180,883.50
  6. Step 6: Final answer
    x = 857,813.46

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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.