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Finding the Fourth Proportional to 339,765.66, 509,651.56 and 103,108.33

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Solution

The fourth proportional to 339,765.66, 509,651.56 and 103,108.33 is: 154,663.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,765.66 : 509,651.56 = 103,108.33 : x
  2. Step 2: Convert to fraction form
    339,765.66/509,651.56 = 103,108.33/x
  3. Step 3: Cross multiply
    339,765.66x = 509,651.56 × 103,108.33
  4. Step 4: Simplify right side
    339,765.66x = 52,549,321,233.49
  5. Step 5: Solve for x
    x = 52,549,321,233.49/339,765.66
  6. Step 6: Final answer
    x = 154,663.43

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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.