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Finding the Third Proportional to 275,220.75 and 387,570

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Solution

The third proportional to 275,220.75 and 387,570 is: 545,781.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,220.75 : 387,570 = 387,570 : x
  2. Step 2: Convert to fraction form
    275,220.75/387,570 = 387,570/x
  3. Step 3: Cross multiply
    275,220.75x = 387,570 × 387,570
  4. Step 4: Simplify right side
    275,220.75x = 150,210,504,900
  5. Step 5: Solve for x
    x = 150,210,504,900/275,220.75
  6. Step 6: Final answer
    x = 545,781.90

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.