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Finding the Fourth Proportional to 236,153.88, 354,138.84 and 78,339.96

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Solution

The fourth proportional to 236,153.88, 354,138.84 and 78,339.96 is: 117,479.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,153.88 : 354,138.84 = 78,339.96 : x
  2. Step 2: Convert to fraction form
    236,153.88/354,138.84 = 78,339.96/x
  3. Step 3: Cross multiply
    236,153.88x = 354,138.84 × 78,339.96
  4. Step 4: Simplify right side
    236,153.88x = 27,743,222,560.05
  5. Step 5: Solve for x
    x = 27,743,222,560.05/236,153.88
  6. Step 6: Final answer
    x = 117,479.43

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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.