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Finding the Fourth Proportional to 329,805.60, 494,902.80 and 217,809.60

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Solution

The fourth proportional to 329,805.60, 494,902.80 and 217,809.60 is: 326,842.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,805.60 : 494,902.80 = 217,809.60 : x
  2. Step 2: Convert to fraction form
    329,805.60/494,902.80 = 217,809.60/x
  3. Step 3: Cross multiply
    329,805.60x = 494,902.80 × 217,809.60
  4. Step 4: Simplify right side
    329,805.60x = 107,794,580,906.88
  5. Step 5: Solve for x
    x = 107,794,580,906.88/329,805.60
  6. Step 6: Final answer
    x = 326,842.79

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1.5x scale

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.