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Finding the Fourth Proportional to 204,964.80, 307,576.80 and 120,724.80

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Solution

The fourth proportional to 204,964.80, 307,576.80 and 120,724.80 is: 181,163.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,964.80 : 307,576.80 = 120,724.80 : x
  2. Step 2: Convert to fraction form
    204,964.80/307,576.80 = 120,724.80/x
  3. Step 3: Cross multiply
    204,964.80x = 307,576.80 × 120,724.80
  4. Step 4: Simplify right side
    204,964.80x = 37,132,147,664.64
  5. Step 5: Solve for x
    x = 37,132,147,664.64/204,964.80
  6. Step 6: Final answer
    x = 181,163.53

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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.