Home / 259,530.40-389,295.60-82,091.80

Finding the Fourth Proportional to 259,530.40, 389,295.60 and 82,091.80

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Solution

The fourth proportional to 259,530.40, 389,295.60 and 82,091.80 is: 123,137.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,530.40 : 389,295.60 = 82,091.80 : x
  2. Step 2: Convert to fraction form
    259,530.40/389,295.60 = 82,091.80/x
  3. Step 3: Cross multiply
    259,530.40x = 389,295.60 × 82,091.80
  4. Step 4: Simplify right side
    259,530.40x = 31,957,976,536.08
  5. Step 5: Solve for x
    x = 31,957,976,536.08/259,530.40
  6. Step 6: Final answer
    x = 123,137.70

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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.