Home / 259,716.80-389,306.40-141,137.60

Finding the Fourth Proportional to 259,716.80, 389,306.40 and 141,137.60

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Solution

The fourth proportional to 259,716.80, 389,306.40 and 141,137.60 is: 211,560.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,716.80 : 389,306.40 = 141,137.60 : x
  2. Step 2: Convert to fraction form
    259,716.80/389,306.40 = 141,137.60/x
  3. Step 3: Cross multiply
    259,716.80x = 389,306.40 × 141,137.60
  4. Step 4: Simplify right side
    259,716.80x = 54,945,770,960.64
  5. Step 5: Solve for x
    x = 54,945,770,960.64/259,716.80
  6. Step 6: Final answer
    x = 211,560.33

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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.