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Finding the Fourth Proportional to 321,235.65, 443,304.77 and 178,004.97

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Solution

The fourth proportional to 321,235.65, 443,304.77 and 178,004.97 is: 245,646.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,235.65 : 443,304.77 = 178,004.97 : x
  2. Step 2: Convert to fraction form
    321,235.65/443,304.77 = 178,004.97/x
  3. Step 3: Cross multiply
    321,235.65x = 443,304.77 × 178,004.97
  4. Step 4: Simplify right side
    321,235.65x = 78,910,451,394.68
  5. Step 5: Solve for x
    x = 78,910,451,394.68/321,235.65
  6. Step 6: Final answer
    x = 245,646.62

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1.5x scale

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.