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Finding the Fourth Proportional to 270,080.97, 405,112.74 and 80,542.91

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Solution

The fourth proportional to 270,080.97, 405,112.74 and 80,542.91 is: 120,811.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,080.97 : 405,112.74 = 80,542.91 : x
  2. Step 2: Convert to fraction form
    270,080.97/405,112.74 = 80,542.91/x
  3. Step 3: Cross multiply
    270,080.97x = 405,112.74 × 80,542.91
  4. Step 4: Simplify right side
    270,080.97x = 32,628,956,932.11
  5. Step 5: Solve for x
    x = 32,628,956,932.11/270,080.97
  6. Step 6: Final answer
    x = 120,811.76

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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.