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Finding the Fourth Proportional to 210,647.10, 290,693.10 and 115,153.80

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Solution

The fourth proportional to 210,647.10, 290,693.10 and 115,153.80 is: 158,912.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,647.10 : 290,693.10 = 115,153.80 : x
  2. Step 2: Convert to fraction form
    210,647.10/290,693.10 = 115,153.80/x
  3. Step 3: Cross multiply
    210,647.10x = 290,693.10 × 115,153.80
  4. Step 4: Simplify right side
    210,647.10x = 33,474,415,098.78
  5. Step 5: Solve for x
    x = 33,474,415,098.78/210,647.10
  6. Step 6: Final answer
    x = 158,912.30

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