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Finding the Fourth Proportional to 309,716.90, 464,569.88 and 85,076.46

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Solution

The fourth proportional to 309,716.90, 464,569.88 and 85,076.46 is: 127,613.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,716.90 : 464,569.88 = 85,076.46 : x
  2. Step 2: Convert to fraction form
    309,716.90/464,569.88 = 85,076.46/x
  3. Step 3: Cross multiply
    309,716.90x = 464,569.88 × 85,076.46
  4. Step 4: Simplify right side
    309,716.90x = 39,523,960,387.64
  5. Step 5: Solve for x
    x = 39,523,960,387.64/309,716.90
  6. Step 6: Final answer
    x = 127,613.19

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