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Finding the Fourth Proportional to 339,759.90, 509,642.91 and 103,102.58

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Solution

The fourth proportional to 339,759.90, 509,642.91 and 103,102.58 is: 154,654.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,759.90 : 509,642.91 = 103,102.58 : x
  2. Step 2: Convert to fraction form
    339,759.90/509,642.91 = 103,102.58/x
  3. Step 3: Cross multiply
    339,759.90x = 509,642.91 × 103,102.58
  4. Step 4: Simplify right side
    339,759.90x = 52,545,496,351.49
  5. Step 5: Solve for x
    x = 52,545,496,351.49/339,759.90
  6. Step 6: Final answer
    x = 154,654.79

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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.