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Finding the Fourth Proportional to 321,057.18, 443,062.44 and 177,819.48

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Solution

The fourth proportional to 321,057.18, 443,062.44 and 177,819.48 is: 245,392.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,057.18 : 443,062.44 = 177,819.48 : x
  2. Step 2: Convert to fraction form
    321,057.18/443,062.44 = 177,819.48/x
  3. Step 3: Cross multiply
    321,057.18x = 443,062.44 × 177,819.48
  4. Step 4: Simplify right side
    321,057.18x = 78,785,132,688.33
  5. Step 5: Solve for x
    x = 78,785,132,688.33/321,057.18
  6. Step 6: Final answer
    x = 245,392.84

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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.