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Finding the Fourth Proportional to 321,575.45, 482,318.55 and 225,220.82

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Solution

The fourth proportional to 321,575.45, 482,318.55 and 225,220.82 is: 337,799.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,575.45 : 482,318.55 = 225,220.82 : x
  2. Step 2: Convert to fraction form
    321,575.45/482,318.55 = 225,220.82/x
  3. Step 3: Cross multiply
    321,575.45x = 482,318.55 × 225,220.82
  4. Step 4: Simplify right side
    321,575.45x = 108,628,176,920.62
  5. Step 5: Solve for x
    x = 108,628,176,920.62/321,575.45
  6. Step 6: Final answer
    x = 337,799.97

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1.5x scale

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.