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Finding the Fourth Proportional to 207,677.40, 311,400.90 and 89,328.60

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Solution

The fourth proportional to 207,677.40, 311,400.90 and 89,328.60 is: 133,943.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,677.40 : 311,400.90 = 89,328.60 : x
  2. Step 2: Convert to fraction form
    207,677.40/311,400.90 = 89,328.60/x
  3. Step 3: Cross multiply
    207,677.40x = 311,400.90 × 89,328.60
  4. Step 4: Simplify right side
    207,677.40x = 27,817,006,435.74
  5. Step 5: Solve for x
    x = 27,817,006,435.74/207,677.40
  6. Step 6: Final answer
    x = 133,943.35

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