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Finding the Fourth Proportional to 638,911.80, 958,482.45 and 218,089.26

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Solution

The fourth proportional to 638,911.80, 958,482.45 and 218,089.26 is: 327,173.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,911.80 : 958,482.45 = 218,089.26 : x
  2. Step 2: Convert to fraction form
    638,911.80/958,482.45 = 218,089.26/x
  3. Step 3: Cross multiply
    638,911.80x = 958,482.45 × 218,089.26
  4. Step 4: Simplify right side
    638,911.80x = 209,034,728,243.49
  5. Step 5: Solve for x
    x = 209,034,728,243.49/638,911.80
  6. Step 6: Final answer
    x = 327,173.06

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