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Finding the Fourth Proportional to 357,717.40, 536,576.10 and 215,999.80

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Solution

The fourth proportional to 357,717.40, 536,576.10 and 215,999.80 is: 323,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,717.40 : 536,576.10 = 215,999.80 : x
  2. Step 2: Convert to fraction form
    357,717.40/536,576.10 = 215,999.80/x
  3. Step 3: Cross multiply
    357,717.40x = 536,576.10 × 215,999.80
  4. Step 4: Simplify right side
    357,717.40x = 115,900,330,284.78
  5. Step 5: Solve for x
    x = 115,900,330,284.78/357,717.40
  6. Step 6: Final answer
    x = 323,999.70

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