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Finding the Fourth Proportional to 215,874.80, 323,658.60 and 82,703.60

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Solution

The fourth proportional to 215,874.80, 323,658.60 and 82,703.60 is: 123,996.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,874.80 : 323,658.60 = 82,703.60 : x
  2. Step 2: Convert to fraction form
    215,874.80/323,658.60 = 82,703.60/x
  3. Step 3: Cross multiply
    215,874.80x = 323,658.60 × 82,703.60
  4. Step 4: Simplify right side
    215,874.80x = 26,767,731,390.96
  5. Step 5: Solve for x
    x = 26,767,731,390.96/215,874.80
  6. Step 6: Final answer
    x = 123,996.55

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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.