Home / 276,712.11-381,898.89-155,876.67

Finding the Fourth Proportional to 276,712.11, 381,898.89 and 155,876.67

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Solution

The fourth proportional to 276,712.11, 381,898.89 and 155,876.67 is: 215,130.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,712.11 : 381,898.89 = 155,876.67 : x
  2. Step 2: Convert to fraction form
    276,712.11/381,898.89 = 155,876.67/x
  3. Step 3: Cross multiply
    276,712.11x = 381,898.89 × 155,876.67
  4. Step 4: Simplify right side
    276,712.11x = 59,529,127,249.90
  5. Step 5: Solve for x
    x = 59,529,127,249.90/276,712.11
  6. Step 6: Final answer
    x = 215,130.18

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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.