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Finding the Fourth Proportional to 236,716.92, 355,078.62 and 78,945.48

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Solution

The fourth proportional to 236,716.92, 355,078.62 and 78,945.48 is: 118,419.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,716.92 : 355,078.62 = 78,945.48 : x
  2. Step 2: Convert to fraction form
    236,716.92/355,078.62 = 78,945.48/x
  3. Step 3: Cross multiply
    236,716.92x = 355,078.62 × 78,945.48
  4. Step 4: Simplify right side
    236,716.92x = 28,031,852,093.64
  5. Step 5: Solve for x
    x = 28,031,852,093.64/236,716.92
  6. Step 6: Final answer
    x = 118,419.30

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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.