Home / 276,790.72-381,972.36-155,933.47

Finding the Fourth Proportional to 276,790.72, 381,972.36 and 155,933.47

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Solution

The fourth proportional to 276,790.72, 381,972.36 and 155,933.47 is: 215,188.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,790.72 : 381,972.36 = 155,933.47 : x
  2. Step 2: Convert to fraction form
    276,790.72/381,972.36 = 155,933.47/x
  3. Step 3: Cross multiply
    276,790.72x = 381,972.36 × 155,933.47
  4. Step 4: Simplify right side
    276,790.72x = 59,562,275,538.89
  5. Step 5: Solve for x
    x = 59,562,275,538.89/276,790.72
  6. Step 6: Final answer
    x = 215,188.85

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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.