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Finding the Fourth Proportional to 343,376.69, 515,138.85 and 115,694.94

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Solution

The fourth proportional to 343,376.69, 515,138.85 and 115,694.94 is: 173,567.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,376.69 : 515,138.85 = 115,694.94 : x
  2. Step 2: Convert to fraction form
    343,376.69/515,138.85 = 115,694.94/x
  3. Step 3: Cross multiply
    343,376.69x = 515,138.85 × 115,694.94
  4. Step 4: Simplify right side
    343,376.69x = 59,598,958,342.42
  5. Step 5: Solve for x
    x = 59,598,958,342.42/343,376.69
  6. Step 6: Final answer
    x = 173,567.28

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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.