Home / 276,140.21-381,078.66-161,428.65

Finding the Fourth Proportional to 276,140.21, 381,078.66 and 161,428.65

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Solution

The fourth proportional to 276,140.21, 381,078.66 and 161,428.65 is: 222,774.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,140.21 : 381,078.66 = 161,428.65 : x
  2. Step 2: Convert to fraction form
    276,140.21/381,078.66 = 161,428.65/x
  3. Step 3: Cross multiply
    276,140.21x = 381,078.66 × 161,428.65
  4. Step 4: Simplify right side
    276,140.21x = 61,517,011,895.89
  5. Step 5: Solve for x
    x = 61,517,011,895.89/276,140.21
  6. Step 6: Final answer
    x = 222,774.56

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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.