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Finding the Fourth Proportional to 277,867.72, 416,753.34 and 78,140.76

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Solution

The fourth proportional to 277,867.72, 416,753.34 and 78,140.76 is: 117,197.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,867.72 : 416,753.34 = 78,140.76 : x
  2. Step 2: Convert to fraction form
    277,867.72/416,753.34 = 78,140.76/x
  3. Step 3: Cross multiply
    277,867.72x = 416,753.34 × 78,140.76
  4. Step 4: Simplify right side
    277,867.72x = 32,565,422,720.14
  5. Step 5: Solve for x
    x = 32,565,422,720.14/277,867.72
  6. Step 6: Final answer
    x = 117,197.57

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