Home / 276,499.85-381,540.38-155,639.07

Finding the Fourth Proportional to 276,499.85, 381,540.38 and 155,639.07

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Solution

The fourth proportional to 276,499.85, 381,540.38 and 155,639.07 is: 214,765.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,499.85 : 381,540.38 = 155,639.07 : x
  2. Step 2: Convert to fraction form
    276,499.85/381,540.38 = 155,639.07/x
  3. Step 3: Cross multiply
    276,499.85x = 381,540.38 × 155,639.07
  4. Step 4: Simplify right side
    276,499.85x = 59,382,589,132.45
  5. Step 5: Solve for x
    x = 59,382,589,132.45/276,499.85
  6. Step 6: Final answer
    x = 214,765.36

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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.