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Finding the Fourth Proportional to 236,769.60, 355,138.20 and 76,843.20

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Solution

The fourth proportional to 236,769.60, 355,138.20 and 76,843.20 is: 115,259.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,769.60 : 355,138.20 = 76,843.20 : x
  2. Step 2: Convert to fraction form
    236,769.60/355,138.20 = 76,843.20/x
  3. Step 3: Cross multiply
    236,769.60x = 355,138.20 × 76,843.20
  4. Step 4: Simplify right side
    236,769.60x = 27,289,955,730.24
  5. Step 5: Solve for x
    x = 27,289,955,730.24/236,769.60
  6. Step 6: Final answer
    x = 115,259.54

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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.