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Finding the Fourth Proportional to 276,664.88, 381,772.68 and 154,147.88

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Solution

The fourth proportional to 276,664.88, 381,772.68 and 154,147.88 is: 212,710.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,664.88 : 381,772.68 = 154,147.88 : x
  2. Step 2: Convert to fraction form
    276,664.88/381,772.68 = 154,147.88/x
  3. Step 3: Cross multiply
    276,664.88x = 381,772.68 × 154,147.88
  4. Step 4: Simplify right side
    276,664.88x = 58,849,449,263.92
  5. Step 5: Solve for x
    x = 58,849,449,263.92/276,664.88
  6. Step 6: Final answer
    x = 212,710.23

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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.