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Finding the Fourth Proportional to 339,993.70, 510,063.92 and 103,355.44

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Solution

The fourth proportional to 339,993.70, 510,063.92 and 103,355.44 is: 155,055.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,993.70 : 510,063.92 = 103,355.44 : x
  2. Step 2: Convert to fraction form
    339,993.70/510,063.92 = 103,355.44/x
  3. Step 3: Cross multiply
    339,993.70x = 510,063.92 × 103,355.44
  4. Step 4: Simplify right side
    339,993.70x = 52,717,880,879.72
  5. Step 5: Solve for x
    x = 52,717,880,879.72/339,993.70
  6. Step 6: Final answer
    x = 155,055.46

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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.