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Finding the Fourth Proportional to 339,750.20, 509,279.70 and 199,436.60

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Solution

The fourth proportional to 339,750.20, 509,279.70 and 199,436.60 is: 298,952.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,750.20 : 509,279.70 = 199,436.60 : x
  2. Step 2: Convert to fraction form
    339,750.20/509,279.70 = 199,436.60/x
  3. Step 3: Cross multiply
    339,750.20x = 509,279.70 × 199,436.60
  4. Step 4: Simplify right side
    339,750.20x = 101,569,011,817.02
  5. Step 5: Solve for x
    x = 101,569,011,817.02/339,750.20
  6. Step 6: Final answer
    x = 298,952.03

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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.