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Finding the Fourth Proportional to 352,039.68, 485,687.43 and 231,246

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Solution

The fourth proportional to 352,039.68, 485,687.43 and 231,246 is: 319,035.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,039.68 : 485,687.43 = 231,246 : x
  2. Step 2: Convert to fraction form
    352,039.68/485,687.43 = 231,246/x
  3. Step 3: Cross multiply
    352,039.68x = 485,687.43 × 231,246
  4. Step 4: Simplify right side
    352,039.68x = 112,313,275,437.78
  5. Step 5: Solve for x
    x = 112,313,275,437.78/352,039.68
  6. Step 6: Final answer
    x = 319,035.84

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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.