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Finding the Fourth Proportional to 276,716.70, 381,888.95 and 154,217.39

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Solution

The fourth proportional to 276,716.70, 381,888.95 and 154,217.39 is: 212,831.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,716.70 : 381,888.95 = 154,217.39 : x
  2. Step 2: Convert to fraction form
    276,716.70/381,888.95 = 154,217.39/x
  3. Step 3: Cross multiply
    276,716.70x = 381,888.95 × 154,217.39
  4. Step 4: Simplify right side
    276,716.70x = 58,893,914,458.31
  5. Step 5: Solve for x
    x = 58,893,914,458.31/276,716.70
  6. Step 6: Final answer
    x = 212,831.08

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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.