Home / 321,581.82-443,986.20-206,913.78

Finding the Fourth Proportional to 321,581.82, 443,986.20 and 206,913.78

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Solution

The fourth proportional to 321,581.82, 443,986.20 and 206,913.78 is: 285,671.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,581.82 : 443,986.20 = 206,913.78 : x
  2. Step 2: Convert to fraction form
    321,581.82/443,986.20 = 206,913.78/x
  3. Step 3: Cross multiply
    321,581.82x = 443,986.20 × 206,913.78
  4. Step 4: Simplify right side
    321,581.82x = 91,866,862,909.84
  5. Step 5: Solve for x
    x = 91,866,862,909.84/321,581.82
  6. Step 6: Final answer
    x = 285,671.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.