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Finding the Fourth Proportional to 321,382.20, 443,511.90 and 176,201.64

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Solution

The fourth proportional to 321,382.20, 443,511.90 and 176,201.64 is: 243,160.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,382.20 : 443,511.90 = 176,201.64 : x
  2. Step 2: Convert to fraction form
    321,382.20/443,511.90 = 176,201.64/x
  3. Step 3: Cross multiply
    321,382.20x = 443,511.90 × 176,201.64
  4. Step 4: Simplify right side
    321,382.20x = 78,147,524,139.52
  5. Step 5: Solve for x
    x = 78,147,524,139.52/321,382.20
  6. Step 6: Final answer
    x = 243,160.71

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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.