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Finding the Fourth Proportional to 321,601.08, 443,824.31 and 178,352.58

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Solution

The fourth proportional to 321,601.08, 443,824.31 and 178,352.58 is: 246,134.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,601.08 : 443,824.31 = 178,352.58 : x
  2. Step 2: Convert to fraction form
    321,601.08/443,824.31 = 178,352.58/x
  3. Step 3: Cross multiply
    321,601.08x = 443,824.31 × 178,352.58
  4. Step 4: Simplify right side
    321,601.08x = 79,157,212,865.44
  5. Step 5: Solve for x
    x = 79,157,212,865.44/321,601.08
  6. Step 6: Final answer
    x = 246,134.78

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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.