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Finding the Fourth Proportional to 256,981.77, 385,456.24 and 79,473.92

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Solution

The fourth proportional to 256,981.77, 385,456.24 and 79,473.92 is: 119,205.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,981.77 : 385,456.24 = 79,473.92 : x
  2. Step 2: Convert to fraction form
    256,981.77/385,456.24 = 79,473.92/x
  3. Step 3: Cross multiply
    256,981.77x = 385,456.24 × 79,473.92
  4. Step 4: Simplify right side
    256,981.77x = 30,633,718,381.26
  5. Step 5: Solve for x
    x = 30,633,718,381.26/256,981.77
  6. Step 6: Final answer
    x = 119,205.80

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