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Finding the Fourth Proportional to 339,846.30, 509,770.26 and 103,190.76

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Solution

The fourth proportional to 339,846.30, 509,770.26 and 103,190.76 is: 154,786.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,846.30 : 509,770.26 = 103,190.76 : x
  2. Step 2: Convert to fraction form
    339,846.30/509,770.26 = 103,190.76/x
  3. Step 3: Cross multiply
    339,846.30x = 509,770.26 × 103,190.76
  4. Step 4: Simplify right side
    339,846.30x = 52,603,580,554.80
  5. Step 5: Solve for x
    x = 52,603,580,554.80/339,846.30
  6. Step 6: Final answer
    x = 154,786.39

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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.