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Finding the Fourth Proportional to 279,878.15, 386,231.95 and 159,019.59

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Solution

The fourth proportional to 279,878.15, 386,231.95 and 159,019.59 is: 219,447.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,878.15 : 386,231.95 = 159,019.59 : x
  2. Step 2: Convert to fraction form
    279,878.15/386,231.95 = 159,019.59/x
  3. Step 3: Cross multiply
    279,878.15x = 386,231.95 × 159,019.59
  4. Step 4: Simplify right side
    279,878.15x = 61,418,447,981.04
  5. Step 5: Solve for x
    x = 61,418,447,981.04/279,878.15
  6. Step 6: Final answer
    x = 219,447.10

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