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Finding the Fourth Proportional to 321,518.53, 482,385.84 and 225,555.76

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Solution

The fourth proportional to 321,518.53, 482,385.84 and 225,555.76 is: 338,409.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,518.53 : 482,385.84 = 225,555.76 : x
  2. Step 2: Convert to fraction form
    321,518.53/482,385.84 = 225,555.76/x
  3. Step 3: Cross multiply
    321,518.53x = 482,385.84 × 225,555.76
  4. Step 4: Simplify right side
    321,518.53x = 108,804,904,754.44
  5. Step 5: Solve for x
    x = 108,804,904,754.44/321,518.53
  6. Step 6: Final answer
    x = 338,409.44

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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.