Home / 321,309.05-443,399.67-178,067.84

Finding the Fourth Proportional to 321,309.05, 443,399.67 and 178,067.84

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Solution

The fourth proportional to 321,309.05, 443,399.67 and 178,067.84 is: 245,729.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,309.05 : 443,399.67 = 178,067.84 : x
  2. Step 2: Convert to fraction form
    321,309.05/443,399.67 = 178,067.84/x
  3. Step 3: Cross multiply
    321,309.05x = 443,399.67 × 178,067.84
  4. Step 4: Simplify right side
    321,309.05x = 78,955,219,276.61
  5. Step 5: Solve for x
    x = 78,955,219,276.61/321,309.05
  6. Step 6: Final answer
    x = 245,729.84

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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.