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Finding the Fourth Proportional to 343,265.20, 515,043.60 and 165,680.80

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Solution

The fourth proportional to 343,265.20, 515,043.60 and 165,680.80 is: 248,591.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,265.20 : 515,043.60 = 165,680.80 : x
  2. Step 2: Convert to fraction form
    343,265.20/515,043.60 = 165,680.80/x
  3. Step 3: Cross multiply
    343,265.20x = 515,043.60 × 165,680.80
  4. Step 4: Simplify right side
    343,265.20x = 85,332,835,682.88
  5. Step 5: Solve for x
    x = 85,332,835,682.88/343,265.20
  6. Step 6: Final answer
    x = 248,591.57

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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.