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Finding the Third Proportional to 275,310.75 and 387,705.75

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Solution

The third proportional to 275,310.75 and 387,705.75 is: 545,985.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,310.75 : 387,705.75 = 387,705.75 : x
  2. Step 2: Convert to fraction form
    275,310.75/387,705.75 = 387,705.75/x
  3. Step 3: Cross multiply
    275,310.75x = 387,705.75 × 387,705.75
  4. Step 4: Simplify right side
    275,310.75x = 150,315,748,583.06
  5. Step 5: Solve for x
    x = 150,315,748,583.06/275,310.75
  6. Step 6: Final answer
    x = 545,985.76

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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.