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Finding the Fourth Proportional to 381,279.80, 526,164.54 and 211,513.98

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Solution

The fourth proportional to 381,279.80, 526,164.54 and 211,513.98 is: 291,888.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,279.80 : 526,164.54 = 211,513.98 : x
  2. Step 2: Convert to fraction form
    381,279.80/526,164.54 = 211,513.98/x
  3. Step 3: Cross multiply
    381,279.80x = 526,164.54 × 211,513.98
  4. Step 4: Simplify right side
    381,279.80x = 111,291,155,990.27
  5. Step 5: Solve for x
    x = 111,291,155,990.27/381,279.80
  6. Step 6: Final answer
    x = 291,888.41

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