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Finding the Fourth Proportional to 256,978,409.24, 384,999,945.36 and 229,428,507.80

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Solution

The fourth proportional to 256,978,409.24, 384,999,945.36 and 229,428,507.80 is: 343,725,230.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,978,409.24 : 384,999,945.36 = 229,428,507.80 : x
  2. Step 2: Convert to fraction form
    256,978,409.24/384,999,945.36 = 229,428,507.80/x
  3. Step 3: Cross multiply
    256,978,409.24x = 384,999,945.36 × 229,428,507.80
  4. Step 4: Simplify right side
    256,978,409.24x = 88,329,962,967,026,336
  5. Step 5: Solve for x
    x = 88,329,962,967,026,336/256,978,409.24
  6. Step 6: Final answer
    x = 343,725,230.57

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