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Finding the Fourth Proportional to 259,755.70, 389,645.70 and 82,276.60

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Solution

The fourth proportional to 259,755.70, 389,645.70 and 82,276.60 is: 123,418.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,755.70 : 389,645.70 = 82,276.60 : x
  2. Step 2: Convert to fraction form
    259,755.70/389,645.70 = 82,276.60/x
  3. Step 3: Cross multiply
    259,755.70x = 389,645.70 × 82,276.60
  4. Step 4: Simplify right side
    259,755.70x = 32,058,723,400.62
  5. Step 5: Solve for x
    x = 32,058,723,400.62/259,755.70
  6. Step 6: Final answer
    x = 123,418.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.