Home / 321,739.46-443,148.14-239,805.15

Finding the Fourth Proportional to 321,739.46, 443,148.14 and 239,805.15

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Solution

The fourth proportional to 321,739.46, 443,148.14 and 239,805.15 is: 330,295.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,739.46 : 443,148.14 = 239,805.15 : x
  2. Step 2: Convert to fraction form
    321,739.46/443,148.14 = 239,805.15/x
  3. Step 3: Cross multiply
    321,739.46x = 443,148.14 × 239,805.15
  4. Step 4: Simplify right side
    321,739.46x = 106,269,205,122.63
  5. Step 5: Solve for x
    x = 106,269,205,122.63/321,739.46
  6. Step 6: Final answer
    x = 330,295.84

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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.