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Finding the Fourth Proportional to 343,591.54, 515,422.68 and 118,951.54

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Solution

The fourth proportional to 343,591.54, 515,422.68 and 118,951.54 is: 178,439.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,591.54 : 515,422.68 = 118,951.54 : x
  2. Step 2: Convert to fraction form
    343,591.54/515,422.68 = 118,951.54/x
  3. Step 3: Cross multiply
    343,591.54x = 515,422.68 × 118,951.54
  4. Step 4: Simplify right side
    343,591.54x = 61,310,321,536.93
  5. Step 5: Solve for x
    x = 61,310,321,536.93/343,591.54
  6. Step 6: Final answer
    x = 178,439.56

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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.