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Finding the Fourth Proportional to 298,344.05, 447,530.84 and 85,143.39

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Solution

The fourth proportional to 298,344.05, 447,530.84 and 85,143.39 is: 127,719.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,344.05 : 447,530.84 = 85,143.39 : x
  2. Step 2: Convert to fraction form
    298,344.05/447,530.84 = 85,143.39/x
  3. Step 3: Cross multiply
    298,344.05x = 447,530.84 × 85,143.39
  4. Step 4: Simplify right side
    298,344.05x = 38,104,292,421.43
  5. Step 5: Solve for x
    x = 38,104,292,421.43/298,344.05
  6. Step 6: Final answer
    x = 127,719.30

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