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Finding the Fourth Proportional to 339,127.20, 508,921.20 and 189,367.20

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Solution

The fourth proportional to 339,127.20, 508,921.20 and 189,367.20 is: 284,179.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,127.20 : 508,921.20 = 189,367.20 : x
  2. Step 2: Convert to fraction form
    339,127.20/508,921.20 = 189,367.20/x
  3. Step 3: Cross multiply
    339,127.20x = 508,921.20 × 189,367.20
  4. Step 4: Simplify right side
    339,127.20x = 96,372,982,664.64
  5. Step 5: Solve for x
    x = 96,372,982,664.64/339,127.20
  6. Step 6: Final answer
    x = 284,179.45

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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.