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Finding the Fourth Proportional to 236,692.92, 355,042.53 and 78,921.45

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Solution

The fourth proportional to 236,692.92, 355,042.53 and 78,921.45 is: 118,383.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,692.92 : 355,042.53 = 78,921.45 : x
  2. Step 2: Convert to fraction form
    236,692.92/355,042.53 = 78,921.45/x
  3. Step 3: Cross multiply
    236,692.92x = 355,042.53 × 78,921.45
  4. Step 4: Simplify right side
    236,692.92x = 28,020,471,279.27
  5. Step 5: Solve for x
    x = 28,020,471,279.27/236,692.92
  6. Step 6: Final answer
    x = 118,383.23

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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.