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Finding the Fourth Proportional to 276,413.92, 381,458.56 and 155,559.52

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Solution

The fourth proportional to 276,413.92, 381,458.56 and 155,559.52 is: 214,676.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,413.92 : 381,458.56 = 155,559.52 : x
  2. Step 2: Convert to fraction form
    276,413.92/381,458.56 = 155,559.52/x
  3. Step 3: Cross multiply
    276,413.92x = 381,458.56 × 155,559.52
  4. Step 4: Simplify right side
    276,413.92x = 59,339,510,493.49
  5. Step 5: Solve for x
    x = 59,339,510,493.49/276,413.92
  6. Step 6: Final answer
    x = 214,676.27

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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.