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Finding the Fourth Proportional to 258,978,834.90, 388,468,252.35 and 258,978,834.90

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Solution

The fourth proportional to 258,978,834.90, 388,468,252.35 and 258,978,834.90 is: 388,468,252.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,978,834.90 : 388,468,252.35 = 258,978,834.90 : x
  2. Step 2: Convert to fraction form
    258,978,834.90/388,468,252.35 = 258,978,834.90/x
  3. Step 3: Cross multiply
    258,978,834.90x = 388,468,252.35 × 258,978,834.90
  4. Step 4: Simplify right side
    258,978,834.90x = 100,605,055,389,242,192
  5. Step 5: Solve for x
    x = 100,605,055,389,242,192/258,978,834.90
  6. Step 6: Final answer
    x = 388,468,252.35

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Why These Related Problems?

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