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Finding the Fourth Proportional to 343,361.70, 515,042.55 and 231,387.30

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Solution

The fourth proportional to 343,361.70, 515,042.55 and 231,387.30 is: 347,080.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,361.70 : 515,042.55 = 231,387.30 : x
  2. Step 2: Convert to fraction form
    343,361.70/515,042.55 = 231,387.30/x
  3. Step 3: Cross multiply
    343,361.70x = 515,042.55 × 231,387.30
  4. Step 4: Simplify right side
    343,361.70x = 119,174,305,029.62
  5. Step 5: Solve for x
    x = 119,174,305,029.62/343,361.70
  6. Step 6: Final answer
    x = 347,080.95

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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.