Home / 276,238.28-381,206.07-153,728.60

Finding the Fourth Proportional to 276,238.28, 381,206.07 and 153,728.60

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Solution

The fourth proportional to 276,238.28, 381,206.07 and 153,728.60 is: 212,143.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,238.28 : 381,206.07 = 153,728.60 : x
  2. Step 2: Convert to fraction form
    276,238.28/381,206.07 = 153,728.60/x
  3. Step 3: Cross multiply
    276,238.28x = 381,206.07 × 153,728.60
  4. Step 4: Simplify right side
    276,238.28x = 58,602,273,546.57
  5. Step 5: Solve for x
    x = 58,602,273,546.57/276,238.28
  6. Step 6: Final answer
    x = 212,143.93

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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.