Home / 276,815.72-381,926.66-155,914.76

Finding the Fourth Proportional to 276,815.72, 381,926.66 and 155,914.76

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Solution

The fourth proportional to 276,815.72, 381,926.66 and 155,914.76 is: 215,117.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,815.72 : 381,926.66 = 155,914.76 : x
  2. Step 2: Convert to fraction form
    276,815.72/381,926.66 = 155,914.76/x
  3. Step 3: Cross multiply
    276,815.72x = 381,926.66 × 155,914.76
  4. Step 4: Simplify right side
    276,815.72x = 59,548,003,531.50
  5. Step 5: Solve for x
    x = 59,548,003,531.50/276,815.72
  6. Step 6: Final answer
    x = 215,117.85

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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.