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Finding the Fourth Proportional to 258,978,663.80, 388,405,787.70 and 149,567,233.40

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Solution

The fourth proportional to 258,978,663.80, 388,405,787.70 and 149,567,233.40 is: 224,314,923.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,978,663.80 : 388,405,787.70 = 149,567,233.40 : x
  2. Step 2: Convert to fraction form
    258,978,663.80/388,405,787.70 = 149,567,233.40/x
  3. Step 3: Cross multiply
    258,978,663.80x = 388,405,787.70 × 149,567,233.40
  4. Step 4: Simplify right side
    258,978,663.80x = 58,092,779,102,836,752
  5. Step 5: Solve for x
    x = 58,092,779,102,836,752/258,978,663.80
  6. Step 6: Final answer
    x = 224,314,923.29

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