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Finding the Fourth Proportional to 278,458.32, 417,679.92 and 192,985.68

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Solution

The fourth proportional to 278,458.32, 417,679.92 and 192,985.68 is: 289,473.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,458.32 : 417,679.92 = 192,985.68 : x
  2. Step 2: Convert to fraction form
    278,458.32/417,679.92 = 192,985.68/x
  3. Step 3: Cross multiply
    278,458.32x = 417,679.92 × 192,985.68
  4. Step 4: Simplify right side
    278,458.32x = 80,606,243,383.55
  5. Step 5: Solve for x
    x = 80,606,243,383.55/278,458.32
  6. Step 6: Final answer
    x = 289,473.28

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