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Finding the Fourth Proportional to 518,080.11, 777,203.27 and 218,604.80

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Solution

The fourth proportional to 518,080.11, 777,203.27 and 218,604.80 is: 327,942.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,080.11 : 777,203.27 = 218,604.80 : x
  2. Step 2: Convert to fraction form
    518,080.11/777,203.27 = 218,604.80/x
  3. Step 3: Cross multiply
    518,080.11x = 777,203.27 × 218,604.80
  4. Step 4: Simplify right side
    518,080.11x = 169,900,367,067.45
  5. Step 5: Solve for x
    x = 169,900,367,067.45/518,080.11
  6. Step 6: Final answer
    x = 327,942.27

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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.