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Finding the Fourth Proportional to 276,647.96, 381,950.76 and 225,782.21

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Solution

The fourth proportional to 276,647.96, 381,950.76 and 225,782.21 is: 311,723.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,647.96 : 381,950.76 = 225,782.21 : x
  2. Step 2: Convert to fraction form
    276,647.96/381,950.76 = 225,782.21/x
  3. Step 3: Cross multiply
    276,647.96x = 381,950.76 × 225,782.21
  4. Step 4: Simplify right side
    276,647.96x = 86,237,684,794.23
  5. Step 5: Solve for x
    x = 86,237,684,794.23/276,647.96
  6. Step 6: Final answer
    x = 311,723.56

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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.