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Finding the Fourth Proportional to 276,510.77, 381,381.13 and 208,530.61

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Solution

The fourth proportional to 276,510.77, 381,381.13 and 208,530.61 is: 287,618.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,510.77 : 381,381.13 = 208,530.61 : x
  2. Step 2: Convert to fraction form
    276,510.77/381,381.13 = 208,530.61/x
  3. Step 3: Cross multiply
    276,510.77x = 381,381.13 × 208,530.61
  4. Step 4: Simplify right side
    276,510.77x = 79,529,638,988.60
  5. Step 5: Solve for x
    x = 79,529,638,988.60/276,510.77
  6. Step 6: Final answer
    x = 287,618.60

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