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Finding the Fourth Proportional to 321,579.93, 443,751.22 and 178,339.53

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Solution

The fourth proportional to 321,579.93, 443,751.22 and 178,339.53 is: 246,092.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,579.93 : 443,751.22 = 178,339.53 : x
  2. Step 2: Convert to fraction form
    321,579.93/443,751.22 = 178,339.53/x
  3. Step 3: Cross multiply
    321,579.93x = 443,751.22 × 178,339.53
  4. Step 4: Simplify right side
    321,579.93x = 79,138,384,011.73
  5. Step 5: Solve for x
    x = 79,138,384,011.73/321,579.93
  6. Step 6: Final answer
    x = 246,092.42

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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.