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Finding the Fourth Proportional to 336,209.20, 503,730.60 and 217,819.60

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Solution

The fourth proportional to 336,209.20, 503,730.60 and 217,819.60 is: 326,351.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,209.20 : 503,730.60 = 217,819.60 : x
  2. Step 2: Convert to fraction form
    336,209.20/503,730.60 = 217,819.60/x
  3. Step 3: Cross multiply
    336,209.20x = 503,730.60 × 217,819.60
  4. Step 4: Simplify right side
    336,209.20x = 109,722,397,799.76
  5. Step 5: Solve for x
    x = 109,722,397,799.76/336,209.20
  6. Step 6: Final answer
    x = 326,351.56

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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.