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Finding the Fourth Proportional to 389,908.62, 538,074.09 and 211,060.62

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Solution

The fourth proportional to 389,908.62, 538,074.09 and 211,060.62 is: 291,263.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,908.62 : 538,074.09 = 211,060.62 : x
  2. Step 2: Convert to fraction form
    389,908.62/538,074.09 = 211,060.62/x
  3. Step 3: Cross multiply
    389,908.62x = 538,074.09 × 211,060.62
  4. Step 4: Simplify right side
    389,908.62x = 113,566,251,041.34
  5. Step 5: Solve for x
    x = 113,566,251,041.34/389,908.62
  6. Step 6: Final answer
    x = 291,263.76

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