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Finding the Fourth Proportional to 321,080.72, 481,716.12 and 110,739.92

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Solution

The fourth proportional to 321,080.72, 481,716.12 and 110,739.92 is: 166,142.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,080.72 : 481,716.12 = 110,739.92 : x
  2. Step 2: Convert to fraction form
    321,080.72/481,716.12 = 110,739.92/x
  3. Step 3: Cross multiply
    321,080.72x = 481,716.12 × 110,739.92
  4. Step 4: Simplify right side
    321,080.72x = 53,345,204,591.51
  5. Step 5: Solve for x
    x = 53,345,204,591.51/321,080.72
  6. Step 6: Final answer
    x = 166,142.66

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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.