Home / 321,785.22-442,488.92-279,269.94

Finding the Fourth Proportional to 321,785.22, 442,488.92 and 279,269.94

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Solution

The fourth proportional to 321,785.22, 442,488.92 and 279,269.94 is: 384,025.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,785.22 : 442,488.92 = 279,269.94 : x
  2. Step 2: Convert to fraction form
    321,785.22/442,488.92 = 279,269.94/x
  3. Step 3: Cross multiply
    321,785.22x = 442,488.92 × 279,269.94
  4. Step 4: Simplify right side
    321,785.22x = 123,573,852,742.72
  5. Step 5: Solve for x
    x = 123,573,852,742.72/321,785.22
  6. Step 6: Final answer
    x = 384,025.88

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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.