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Finding the Fourth Proportional to 219,960, 303,474.18 and 123,149.55

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Solution

The fourth proportional to 219,960, 303,474.18 and 123,149.55 is: 169,906.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,960 : 303,474.18 = 123,149.55 : x
  2. Step 2: Convert to fraction form
    219,960/303,474.18 = 123,149.55/x
  3. Step 3: Cross multiply
    219,960x = 303,474.18 × 123,149.55
  4. Step 4: Simplify right side
    219,960x = 37,372,708,703.62
  5. Step 5: Solve for x
    x = 37,372,708,703.62/219,960
  6. Step 6: Final answer
    x = 169,906.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.