Home / 276,799.72-381,904.60-155,898.76

Finding the Fourth Proportional to 276,799.72, 381,904.60 and 155,898.76

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Solution

The fourth proportional to 276,799.72, 381,904.60 and 155,898.76 is: 215,095.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,799.72 : 381,904.60 = 155,898.76 : x
  2. Step 2: Convert to fraction form
    276,799.72/381,904.60 = 155,898.76/x
  3. Step 3: Cross multiply
    276,799.72x = 381,904.60 × 155,898.76
  4. Step 4: Simplify right side
    276,799.72x = 59,538,453,578.30
  5. Step 5: Solve for x
    x = 59,538,453,578.30/276,799.72
  6. Step 6: Final answer
    x = 215,095.79

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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.