Home / 259,748.80-389,623.20-82,255.52

Finding the Fourth Proportional to 259,748.80, 389,623.20 and 82,255.52

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Solution

The fourth proportional to 259,748.80, 389,623.20 and 82,255.52 is: 123,383.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,748.80 : 389,623.20 = 82,255.52 : x
  2. Step 2: Convert to fraction form
    259,748.80/389,623.20 = 82,255.52/x
  3. Step 3: Cross multiply
    259,748.80x = 389,623.20 × 82,255.52
  4. Step 4: Simplify right side
    259,748.80x = 32,048,658,920.06
  5. Step 5: Solve for x
    x = 32,048,658,920.06/259,748.80
  6. Step 6: Final answer
    x = 123,383.28

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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.