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Finding the Fourth Proportional to 321,067.54, 443,053.74 and 177,819.04

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Solution

The fourth proportional to 321,067.54, 443,053.74 and 177,819.04 is: 245,379.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,067.54 : 443,053.74 = 177,819.04 : x
  2. Step 2: Convert to fraction form
    321,067.54/443,053.74 = 177,819.04/x
  3. Step 3: Cross multiply
    321,067.54x = 443,053.74 × 177,819.04
  4. Step 4: Simplify right side
    321,067.54x = 78,783,390,715.21
  5. Step 5: Solve for x
    x = 78,783,390,715.21/321,067.54
  6. Step 6: Final answer
    x = 245,379.49

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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.