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Finding the Fourth Proportional to 276,027.78, 380,893.21 and 159,721.15

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Solution

The fourth proportional to 276,027.78, 380,893.21 and 159,721.15 is: 220,400.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,027.78 : 380,893.21 = 159,721.15 : x
  2. Step 2: Convert to fraction form
    276,027.78/380,893.21 = 159,721.15/x
  3. Step 3: Cross multiply
    276,027.78x = 380,893.21 × 159,721.15
  4. Step 4: Simplify right side
    276,027.78x = 60,836,700,891.03
  5. Step 5: Solve for x
    x = 60,836,700,891.03/276,027.78
  6. Step 6: Final answer
    x = 220,400.64

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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.