Home / 276,718.05-381,898.07-161,989.73

Finding the Fourth Proportional to 276,718.05, 381,898.07 and 161,989.73

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Solution

The fourth proportional to 276,718.05, 381,898.07 and 161,989.73 is: 223,561.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,718.05 : 381,898.07 = 161,989.73 : x
  2. Step 2: Convert to fraction form
    276,718.05/381,898.07 = 161,989.73/x
  3. Step 3: Cross multiply
    276,718.05x = 381,898.07 × 161,989.73
  4. Step 4: Simplify right side
    276,718.05x = 61,863,565,185.45
  5. Step 5: Solve for x
    x = 61,863,565,185.45/276,718.05
  6. Step 6: Final answer
    x = 223,561.73

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1.5x scale

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.