Home / 321,318.12-443,419.02-178,087.38

Finding the Fourth Proportional to 321,318.12, 443,419.02 and 178,087.38

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Solution

The fourth proportional to 321,318.12, 443,419.02 and 178,087.38 is: 245,760.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,318.12 : 443,419.02 = 178,087.38 : x
  2. Step 2: Convert to fraction form
    321,318.12/443,419.02 = 178,087.38/x
  3. Step 3: Cross multiply
    321,318.12x = 443,419.02 × 178,087.38
  4. Step 4: Simplify right side
    321,318.12x = 78,967,331,513.97
  5. Step 5: Solve for x
    x = 78,967,331,513.97/321,318.12
  6. Step 6: Final answer
    x = 245,760.59

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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.