Home / 321,784.20-442,487.52-279,268.92

Finding the Fourth Proportional to 321,784.20, 442,487.52 and 279,268.92

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Solution

The fourth proportional to 321,784.20, 442,487.52 and 279,268.92 is: 384,024.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,784.20 : 442,487.52 = 279,268.92 : x
  2. Step 2: Convert to fraction form
    321,784.20/442,487.52 = 279,268.92/x
  3. Step 3: Cross multiply
    321,784.20x = 442,487.52 × 279,268.92
  4. Step 4: Simplify right side
    321,784.20x = 123,573,011,823.88
  5. Step 5: Solve for x
    x = 123,573,011,823.88/321,784.20
  6. Step 6: Final answer
    x = 384,024.49

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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.