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Finding the Fourth Proportional to 400,810.84, 553,218.78 and 231,147.16

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Solution

The fourth proportional to 400,810.84, 553,218.78 and 231,147.16 is: 319,040.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,810.84 : 553,218.78 = 231,147.16 : x
  2. Step 2: Convert to fraction form
    400,810.84/553,218.78 = 231,147.16/x
  3. Step 3: Cross multiply
    400,810.84x = 553,218.78 × 231,147.16
  4. Step 4: Simplify right side
    400,810.84x = 127,874,949,855.67
  5. Step 5: Solve for x
    x = 127,874,949,855.67/400,810.84
  6. Step 6: Final answer
    x = 319,040.65

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