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Finding the Fourth Proportional to 424,408.54, 636,477.78 and 140,046.08

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Solution

The fourth proportional to 424,408.54, 636,477.78 and 140,046.08 is: 210,024.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,408.54 : 636,477.78 = 140,046.08 : x
  2. Step 2: Convert to fraction form
    424,408.54/636,477.78 = 140,046.08/x
  3. Step 3: Cross multiply
    424,408.54x = 636,477.78 × 140,046.08
  4. Step 4: Simplify right side
    424,408.54x = 89,136,218,096.10
  5. Step 5: Solve for x
    x = 89,136,218,096.10/424,408.54
  6. Step 6: Final answer
    x = 210,024.56

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