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Finding the Fourth Proportional to 424,238.40, 636,564.96 and 199,621.15

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Solution

The fourth proportional to 424,238.40, 636,564.96 and 199,621.15 is: 299,529.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,238.40 : 636,564.96 = 199,621.15 : x
  2. Step 2: Convert to fraction form
    424,238.40/636,564.96 = 199,621.15/x
  3. Step 3: Cross multiply
    424,238.40x = 636,564.96 × 199,621.15
  4. Step 4: Simplify right side
    424,238.40x = 127,071,827,773.49
  5. Step 5: Solve for x
    x = 127,071,827,773.49/424,238.40
  6. Step 6: Final answer
    x = 299,529.29

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