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Finding the Fourth Proportional to 259,669.62, 388,479.78 and 196,671.78

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Solution

The fourth proportional to 259,669.62, 388,479.78 and 196,671.78 is: 294,231.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,669.62 : 388,479.78 = 196,671.78 : x
  2. Step 2: Convert to fraction form
    259,669.62/388,479.78 = 196,671.78/x
  3. Step 3: Cross multiply
    259,669.62x = 388,479.78 × 196,671.78
  4. Step 4: Simplify right side
    259,669.62x = 76,403,009,826.61
  5. Step 5: Solve for x
    x = 76,403,009,826.61/259,669.62
  6. Step 6: Final answer
    x = 294,231.61

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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.