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Finding the Fourth Proportional to 660,201.36, 989,930.24 and 210,816.60

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Solution

The fourth proportional to 660,201.36, 989,930.24 and 210,816.60 is: 316,106.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,201.36 : 989,930.24 = 210,816.60 : x
  2. Step 2: Convert to fraction form
    660,201.36/989,930.24 = 210,816.60/x
  3. Step 3: Cross multiply
    660,201.36x = 989,930.24 × 210,816.60
  4. Step 4: Simplify right side
    660,201.36x = 208,693,727,433.98
  5. Step 5: Solve for x
    x = 208,693,727,433.98/660,201.36
  6. Step 6: Final answer
    x = 316,106.18

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