Home / 321,470.12-482,298.80-143,935.61

Finding the Fourth Proportional to 321,470.12, 482,298.80 and 143,935.61

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Solution

The fourth proportional to 321,470.12, 482,298.80 and 143,935.61 is: 215,945.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,470.12 : 482,298.80 = 143,935.61 : x
  2. Step 2: Convert to fraction form
    321,470.12/482,298.80 = 143,935.61/x
  3. Step 3: Cross multiply
    321,470.12x = 482,298.80 × 143,935.61
  4. Step 4: Simplify right side
    321,470.12x = 69,419,970,711.41
  5. Step 5: Solve for x
    x = 69,419,970,711.41/321,470.12
  6. Step 6: Final answer
    x = 215,945.33

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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.