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Finding the Fourth Proportional to 339,755.64, 509,604.12 and 115,111.32

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Solution

The fourth proportional to 339,755.64, 509,604.12 and 115,111.32 is: 172,657.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,755.64 : 509,604.12 = 115,111.32 : x
  2. Step 2: Convert to fraction form
    339,755.64/509,604.12 = 115,111.32/x
  3. Step 3: Cross multiply
    339,755.64x = 509,604.12 × 115,111.32
  4. Step 4: Simplify right side
    339,755.64x = 58,661,202,930.64
  5. Step 5: Solve for x
    x = 58,661,202,930.64/339,755.64
  6. Step 6: Final answer
    x = 172,657.04

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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.