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Finding the Fourth Proportional to 378,393.12, 522,181.08 and 208,636.56

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Solution

The fourth proportional to 378,393.12, 522,181.08 and 208,636.56 is: 287,917.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,393.12 : 522,181.08 = 208,636.56 : x
  2. Step 2: Convert to fraction form
    378,393.12/522,181.08 = 208,636.56/x
  3. Step 3: Cross multiply
    378,393.12x = 522,181.08 × 208,636.56
  4. Step 4: Simplify right side
    378,393.12x = 108,946,064,228.29
  5. Step 5: Solve for x
    x = 108,946,064,228.29/378,393.12
  6. Step 6: Final answer
    x = 287,917.67

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