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Finding the Fourth Proportional to 290,989.20, 436,482.59 and 80,626.53

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Solution

The fourth proportional to 290,989.20, 436,482.59 and 80,626.53 is: 120,939.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,989.20 : 436,482.59 = 80,626.53 : x
  2. Step 2: Convert to fraction form
    290,989.20/436,482.59 = 80,626.53/x
  3. Step 3: Cross multiply
    290,989.20x = 436,482.59 × 80,626.53
  4. Step 4: Simplify right side
    290,989.20x = 35,192,076,233.98
  5. Step 5: Solve for x
    x = 35,192,076,233.98/290,989.20
  6. Step 6: Final answer
    x = 120,939.46

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