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Finding the Fourth Proportional to 354,915.15, 489,789.84 and 193,770.62

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Solution

The fourth proportional to 354,915.15, 489,789.84 and 193,770.62 is: 267,407.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,915.15 : 489,789.84 = 193,770.62 : x
  2. Step 2: Convert to fraction form
    354,915.15/489,789.84 = 193,770.62/x
  3. Step 3: Cross multiply
    354,915.15x = 489,789.84 × 193,770.62
  4. Step 4: Simplify right side
    354,915.15x = 94,906,878,517.55
  5. Step 5: Solve for x
    x = 94,906,878,517.55/354,915.15
  6. Step 6: Final answer
    x = 267,407.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.