Home / 259,481.85-389,222.78-72,493.05

Finding the Fourth Proportional to 259,481.85, 389,222.78 and 72,493.05

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Solution

The fourth proportional to 259,481.85, 389,222.78 and 72,493.05 is: 108,739.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,481.85 : 389,222.78 = 72,493.05 : x
  2. Step 2: Convert to fraction form
    259,481.85/389,222.78 = 72,493.05/x
  3. Step 3: Cross multiply
    259,481.85x = 389,222.78 × 72,493.05
  4. Step 4: Simplify right side
    259,481.85x = 28,215,946,089.21
  5. Step 5: Solve for x
    x = 28,215,946,089.21/259,481.85
  6. Step 6: Final answer
    x = 108,739.58

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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.