Home / 276,139.36-381,200.72-208,183.96

Finding the Fourth Proportional to 276,139.36, 381,200.72 and 208,183.96

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Solution

The fourth proportional to 276,139.36, 381,200.72 and 208,183.96 is: 287,390.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,139.36 : 381,200.72 = 208,183.96 : x
  2. Step 2: Convert to fraction form
    276,139.36/381,200.72 = 208,183.96/x
  3. Step 3: Cross multiply
    276,139.36x = 381,200.72 × 208,183.96
  4. Step 4: Simplify right side
    276,139.36x = 79,359,875,444.45
  5. Step 5: Solve for x
    x = 79,359,875,444.45/276,139.36
  6. Step 6: Final answer
    x = 287,390.67

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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.