Home / 321,181.39-443,438.30-206,511.53

Finding the Fourth Proportional to 321,181.39, 443,438.30 and 206,511.53

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Solution

The fourth proportional to 321,181.39, 443,438.30 and 206,511.53 is: 285,119.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,181.39 : 443,438.30 = 206,511.53 : x
  2. Step 2: Convert to fraction form
    321,181.39/443,438.30 = 206,511.53/x
  3. Step 3: Cross multiply
    321,181.39x = 443,438.30 × 206,511.53
  4. Step 4: Simplify right side
    321,181.39x = 91,575,121,793.60
  5. Step 5: Solve for x
    x = 91,575,121,793.60/321,181.39
  6. Step 6: Final answer
    x = 285,119.64

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1.5x scale

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.