Home / 276,786.72-381,886.65-155,885.72

Finding the Fourth Proportional to 276,786.72, 381,886.65 and 155,885.72

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Solution

The fourth proportional to 276,786.72, 381,886.65 and 155,885.72 is: 215,077.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,786.72 : 381,886.65 = 155,885.72 : x
  2. Step 2: Convert to fraction form
    276,786.72/381,886.65 = 155,885.72/x
  3. Step 3: Cross multiply
    276,786.72x = 381,886.65 × 155,885.72
  4. Step 4: Simplify right side
    276,786.72x = 59,530,673,484.20
  5. Step 5: Solve for x
    x = 59,530,673,484.20/276,786.72
  6. Step 6: Final answer
    x = 215,077.78

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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.