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Finding the Fourth Proportional to 339,512.20, 509,321.13 and 102,798.52

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Solution

The fourth proportional to 339,512.20, 509,321.13 and 102,798.52 is: 154,213.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,512.20 : 509,321.13 = 102,798.52 : x
  2. Step 2: Convert to fraction form
    339,512.20/509,321.13 = 102,798.52/x
  3. Step 3: Cross multiply
    339,512.20x = 509,321.13 × 102,798.52
  4. Step 4: Simplify right side
    339,512.20x = 52,357,458,368.73
  5. Step 5: Solve for x
    x = 52,357,458,368.73/339,512.20
  6. Step 6: Final answer
    x = 154,213.78

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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.