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Finding the Fourth Proportional to 192,231.36, 288,042.48 and 139,393.44

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Solution

The fourth proportional to 192,231.36, 288,042.48 and 139,393.44 is: 208,869.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,231.36 : 288,042.48 = 139,393.44 : x
  2. Step 2: Convert to fraction form
    192,231.36/288,042.48 = 139,393.44/x
  3. Step 3: Cross multiply
    192,231.36x = 288,042.48 × 139,393.44
  4. Step 4: Simplify right side
    192,231.36x = 40,151,232,153.33
  5. Step 5: Solve for x
    x = 40,151,232,153.33/192,231.36
  6. Step 6: Final answer
    x = 208,869.31

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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.