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Finding the Fourth Proportional to 208,323.29, 312,420.44 and 75,186.70

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Solution

The fourth proportional to 208,323.29, 312,420.44 and 75,186.70 is: 112,756.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,323.29 : 312,420.44 = 75,186.70 : x
  2. Step 2: Convert to fraction form
    208,323.29/312,420.44 = 75,186.70/x
  3. Step 3: Cross multiply
    208,323.29x = 312,420.44 × 75,186.70
  4. Step 4: Simplify right side
    208,323.29x = 23,489,861,896.15
  5. Step 5: Solve for x
    x = 23,489,861,896.15/208,323.29
  6. Step 6: Final answer
    x = 112,756.77

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