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Finding the Fourth Proportional to 323,769.90, 485,654.85 and 321,696.30

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Solution

The fourth proportional to 323,769.90, 485,654.85 and 321,696.30 is: 482,544.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,769.90 : 485,654.85 = 321,696.30 : x
  2. Step 2: Convert to fraction form
    323,769.90/485,654.85 = 321,696.30/x
  3. Step 3: Cross multiply
    323,769.90x = 485,654.85 × 321,696.30
  4. Step 4: Simplify right side
    323,769.90x = 156,233,368,322.06
  5. Step 5: Solve for x
    x = 156,233,368,322.06/323,769.90
  6. Step 6: Final answer
    x = 482,544.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.