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Finding the Fourth Proportional to 256,543.74, 384,451.11 and 121,463.69

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Solution

The fourth proportional to 256,543.74, 384,451.11 and 121,463.69 is: 182,022.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,543.74 : 384,451.11 = 121,463.69 : x
  2. Step 2: Convert to fraction form
    256,543.74/384,451.11 = 121,463.69/x
  3. Step 3: Cross multiply
    256,543.74x = 384,451.11 × 121,463.69
  4. Step 4: Simplify right side
    256,543.74x = 46,696,848,522.94
  5. Step 5: Solve for x
    x = 46,696,848,522.94/256,543.74
  6. Step 6: Final answer
    x = 182,022.95

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