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Finding the Fourth Proportional to 321,640.29, 482,275.84 and 121,833.24

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Solution

The fourth proportional to 321,640.29, 482,275.84 and 121,833.24 is: 182,679.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,640.29 : 482,275.84 = 121,833.24 : x
  2. Step 2: Convert to fraction form
    321,640.29/482,275.84 = 121,833.24/x
  3. Step 3: Cross multiply
    321,640.29x = 482,275.84 × 121,833.24
  4. Step 4: Simplify right side
    321,640.29x = 58,757,228,160.92
  5. Step 5: Solve for x
    x = 58,757,228,160.92/321,640.29
  6. Step 6: Final answer
    x = 182,679.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.