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Finding the Fourth Proportional to 343,375.69, 515,137.35 and 115,693.94

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Solution

The fourth proportional to 343,375.69, 515,137.35 and 115,693.94 is: 173,565.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,375.69 : 515,137.35 = 115,693.94 : x
  2. Step 2: Convert to fraction form
    343,375.69/515,137.35 = 115,693.94/x
  3. Step 3: Cross multiply
    343,375.69x = 515,137.35 × 115,693.94
  4. Step 4: Simplify right side
    343,375.69x = 59,598,269,662.66
  5. Step 5: Solve for x
    x = 59,598,269,662.66/343,375.69
  6. Step 6: Final answer
    x = 173,565.78

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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.