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Finding the Fourth Proportional to 278,883.84, 418,318.74 and 79,203.72

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Solution

The fourth proportional to 278,883.84, 418,318.74 and 79,203.72 is: 118,803.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,883.84 : 418,318.74 = 79,203.72 : x
  2. Step 2: Convert to fraction form
    278,883.84/418,318.74 = 79,203.72/x
  3. Step 3: Cross multiply
    278,883.84x = 418,318.74 × 79,203.72
  4. Step 4: Simplify right side
    278,883.84x = 33,132,400,353.71
  5. Step 5: Solve for x
    x = 33,132,400,353.71/278,883.84
  6. Step 6: Final answer
    x = 118,803.59

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