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Finding the Fourth Proportional to 265,830.24, 398,677.26 and 78,798

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Solution

The fourth proportional to 265,830.24, 398,677.26 and 78,798 is: 118,176.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,830.24 : 398,677.26 = 78,798 : x
  2. Step 2: Convert to fraction form
    265,830.24/398,677.26 = 78,798/x
  3. Step 3: Cross multiply
    265,830.24x = 398,677.26 × 78,798
  4. Step 4: Simplify right side
    265,830.24x = 31,414,970,733.48
  5. Step 5: Solve for x
    x = 31,414,970,733.48/265,830.24
  6. Step 6: Final answer
    x = 118,176.81

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