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Finding the Fourth Proportional to 321,053.76, 443,057.45 and 193,704.75

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Solution

The fourth proportional to 321,053.76, 443,057.45 and 193,704.75 is: 267,314.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,053.76 : 443,057.45 = 193,704.75 : x
  2. Step 2: Convert to fraction form
    321,053.76/443,057.45 = 193,704.75/x
  3. Step 3: Cross multiply
    321,053.76x = 443,057.45 × 193,704.75
  4. Step 4: Simplify right side
    321,053.76x = 85,822,331,619.36
  5. Step 5: Solve for x
    x = 85,822,331,619.36/321,053.76
  6. Step 6: Final answer
    x = 267,314.52

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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.