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Finding the Fourth Proportional to 222,143.20, 333,117.60 and 88,979.20

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Solution

The fourth proportional to 222,143.20, 333,117.60 and 88,979.20 is: 133,429.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,143.20 : 333,117.60 = 88,979.20 : x
  2. Step 2: Convert to fraction form
    222,143.20/333,117.60 = 88,979.20/x
  3. Step 3: Cross multiply
    222,143.20x = 333,117.60 × 88,979.20
  4. Step 4: Simplify right side
    222,143.20x = 29,640,537,553.92
  5. Step 5: Solve for x
    x = 29,640,537,553.92/222,143.20
  6. Step 6: Final answer
    x = 133,429.87

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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.