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Finding the Fourth Proportional to 339,653.66, 509,450.72 and 115,008.96

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Solution

The fourth proportional to 339,653.66, 509,450.72 and 115,008.96 is: 172,503.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,653.66 : 509,450.72 = 115,008.96 : x
  2. Step 2: Convert to fraction form
    339,653.66/509,450.72 = 115,008.96/x
  3. Step 3: Cross multiply
    339,653.66x = 509,450.72 × 115,008.96
  4. Step 4: Simplify right side
    339,653.66x = 58,591,398,813.85
  5. Step 5: Solve for x
    x = 58,591,398,813.85/339,653.66
  6. Step 6: Final answer
    x = 172,503.37

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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.