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Finding the Fourth Proportional to 321,175.10, 443,043.06 and 252,940.70

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Solution

The fourth proportional to 321,175.10, 443,043.06 and 252,940.70 is: 348,917.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,175.10 : 443,043.06 = 252,940.70 : x
  2. Step 2: Convert to fraction form
    321,175.10/443,043.06 = 252,940.70/x
  3. Step 3: Cross multiply
    321,175.10x = 443,043.06 × 252,940.70
  4. Step 4: Simplify right side
    321,175.10x = 112,063,621,726.54
  5. Step 5: Solve for x
    x = 112,063,621,726.54/321,175.10
  6. Step 6: Final answer
    x = 348,917.53

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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.