Home / 276,645.80-381,766.18-155,786.60

Finding the Fourth Proportional to 276,645.80, 381,766.18 and 155,786.60

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Solution

The fourth proportional to 276,645.80, 381,766.18 and 155,786.60 is: 214,982.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,645.80 : 381,766.18 = 155,786.60 : x
  2. Step 2: Convert to fraction form
    276,645.80/381,766.18 = 155,786.60/x
  3. Step 3: Cross multiply
    276,645.80x = 381,766.18 × 155,786.60
  4. Step 4: Simplify right side
    276,645.80x = 59,474,055,177.19
  5. Step 5: Solve for x
    x = 59,474,055,177.19/276,645.80
  6. Step 6: Final answer
    x = 214,982.68

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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.