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Finding the Fourth Proportional to 339,933, 509,910.30 and 103,277.74

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Solution

The fourth proportional to 339,933, 509,910.30 and 103,277.74 is: 154,919.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,933 : 509,910.30 = 103,277.74 : x
  2. Step 2: Convert to fraction form
    339,933/509,910.30 = 103,277.74/x
  3. Step 3: Cross multiply
    339,933x = 509,910.30 × 103,277.74
  4. Step 4: Simplify right side
    339,933x = 52,662,383,386.72
  5. Step 5: Solve for x
    x = 52,662,383,386.72/339,933
  6. Step 6: Final answer
    x = 154,919.89

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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.