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Finding the Fourth Proportional to 278,815.60, 418,223.40 and 101,328.40

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Solution

The fourth proportional to 278,815.60, 418,223.40 and 101,328.40 is: 151,992.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,815.60 : 418,223.40 = 101,328.40 : x
  2. Step 2: Convert to fraction form
    278,815.60/418,223.40 = 101,328.40/x
  3. Step 3: Cross multiply
    278,815.60x = 418,223.40 × 101,328.40
  4. Step 4: Simplify right side
    278,815.60x = 42,377,907,964.56
  5. Step 5: Solve for x
    x = 42,377,907,964.56/278,815.60
  6. Step 6: Final answer
    x = 151,992.60

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