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Finding the Fourth Proportional to 259,781.40, 389,672.10 and 159,616.80

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Solution

The fourth proportional to 259,781.40, 389,672.10 and 159,616.80 is: 239,425.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,781.40 : 389,672.10 = 159,616.80 : x
  2. Step 2: Convert to fraction form
    259,781.40/389,672.10 = 159,616.80/x
  3. Step 3: Cross multiply
    259,781.40x = 389,672.10 × 159,616.80
  4. Step 4: Simplify right side
    259,781.40x = 62,198,213,651.28
  5. Step 5: Solve for x
    x = 62,198,213,651.28/259,781.40
  6. Step 6: Final answer
    x = 239,425.20

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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.