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Finding the Fourth Proportional to 229,978,896.80, 344,968,345.20 and 68,420,832.80

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Solution

The fourth proportional to 229,978,896.80, 344,968,345.20 and 68,420,832.80 is: 102,631,249.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,978,896.80 : 344,968,345.20 = 68,420,832.80 : x
  2. Step 2: Convert to fraction form
    229,978,896.80/344,968,345.20 = 68,420,832.80/x
  3. Step 3: Cross multiply
    229,978,896.80x = 344,968,345.20 × 68,420,832.80
  4. Step 4: Simplify right side
    229,978,896.80x = 23,603,021,468,221,880
  5. Step 5: Solve for x
    x = 23,603,021,468,221,880/229,978,896.80
  6. Step 6: Final answer
    x = 102,631,249.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.