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Finding the Fourth Proportional to 402,121.90, 603,321.23 and 252,186.65

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Solution

The fourth proportional to 402,121.90, 603,321.23 and 252,186.65 is: 378,366.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,121.90 : 603,321.23 = 252,186.65 : x
  2. Step 2: Convert to fraction form
    402,121.90/603,321.23 = 252,186.65/x
  3. Step 3: Cross multiply
    402,121.90x = 603,321.23 × 252,186.65
  4. Step 4: Simplify right side
    402,121.90x = 152,149,559,743.90
  5. Step 5: Solve for x
    x = 152,149,559,743.90/402,121.90
  6. Step 6: Final answer
    x = 378,366.76

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