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Finding the Fourth Proportional to 253,491.80, 380,237.70 and 66,522.20

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Solution

The fourth proportional to 253,491.80, 380,237.70 and 66,522.20 is: 99,783.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,491.80 : 380,237.70 = 66,522.20 : x
  2. Step 2: Convert to fraction form
    253,491.80/380,237.70 = 66,522.20/x
  3. Step 3: Cross multiply
    253,491.80x = 380,237.70 × 66,522.20
  4. Step 4: Simplify right side
    253,491.80x = 25,294,248,326.94
  5. Step 5: Solve for x
    x = 25,294,248,326.94/253,491.80
  6. Step 6: Final answer
    x = 99,783.30

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