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Finding the Fourth Proportional to 321,319.44, 481,942.44 and 84,680.64

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Solution

The fourth proportional to 321,319.44, 481,942.44 and 84,680.64 is: 127,011.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,319.44 : 481,942.44 = 84,680.64 : x
  2. Step 2: Convert to fraction form
    321,319.44/481,942.44 = 84,680.64/x
  3. Step 3: Cross multiply
    321,319.44x = 481,942.44 × 84,680.64
  4. Step 4: Simplify right side
    321,319.44x = 40,811,194,262.36
  5. Step 5: Solve for x
    x = 40,811,194,262.36/321,319.44
  6. Step 6: Final answer
    x = 127,011.28

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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.