Home / 278,020.68-383,634.19-197,418.79

Finding the Fourth Proportional to 278,020.68, 383,634.19 and 197,418.79

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Solution

The fourth proportional to 278,020.68, 383,634.19 and 197,418.79 is: 272,413.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,020.68 : 383,634.19 = 197,418.79 : x
  2. Step 2: Convert to fraction form
    278,020.68/383,634.19 = 197,418.79/x
  3. Step 3: Cross multiply
    278,020.68x = 383,634.19 × 197,418.79
  4. Step 4: Simplify right side
    278,020.68x = 75,736,597,592.43
  5. Step 5: Solve for x
    x = 75,736,597,592.43/278,020.68
  6. Step 6: Final answer
    x = 272,413.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.