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Finding the Fourth Proportional to 276,662.88, 381,769.92 and 154,145.88

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Solution

The fourth proportional to 276,662.88, 381,769.92 and 154,145.88 is: 212,707.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,662.88 : 381,769.92 = 154,145.88 : x
  2. Step 2: Convert to fraction form
    276,662.88/381,769.92 = 154,145.88/x
  3. Step 3: Cross multiply
    276,662.88x = 381,769.92 × 154,145.88
  4. Step 4: Simplify right side
    276,662.88x = 58,848,260,275.93
  5. Step 5: Solve for x
    x = 58,848,260,275.93/276,662.88
  6. Step 6: Final answer
    x = 212,707.47

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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.