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Finding the Fourth Proportional to 278,814.14, 417,986.10 and 120,923.67

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Solution

The fourth proportional to 278,814.14, 417,986.10 and 120,923.67 is: 181,283.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,814.14 : 417,986.10 = 120,923.67 : x
  2. Step 2: Convert to fraction form
    278,814.14/417,986.10 = 120,923.67/x
  3. Step 3: Cross multiply
    278,814.14x = 417,986.10 × 120,923.67
  4. Step 4: Simplify right side
    278,814.14x = 50,544,413,220.99
  5. Step 5: Solve for x
    x = 50,544,413,220.99/278,814.14
  6. Step 6: Final answer
    x = 181,283.54

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