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Finding the Fourth Proportional to 216,612.80, 325,078.86 and 102,760.98

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Solution

The fourth proportional to 216,612.80, 325,078.86 and 102,760.98 is: 154,217.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,612.80 : 325,078.86 = 102,760.98 : x
  2. Step 2: Convert to fraction form
    216,612.80/325,078.86 = 102,760.98/x
  3. Step 3: Cross multiply
    216,612.80x = 325,078.86 × 102,760.98
  4. Step 4: Simplify right side
    216,612.80x = 33,405,422,230.88
  5. Step 5: Solve for x
    x = 33,405,422,230.88/216,612.80
  6. Step 6: Final answer
    x = 154,217.21

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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.