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Finding the Fourth Proportional to 354,906.69, 489,769.90 and 193,759.89

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Solution

The fourth proportional to 354,906.69, 489,769.90 and 193,759.89 is: 267,387.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,906.69 : 489,769.90 = 193,759.89 : x
  2. Step 2: Convert to fraction form
    354,906.69/489,769.90 = 193,759.89/x
  3. Step 3: Cross multiply
    354,906.69x = 489,769.90 × 193,759.89
  4. Step 4: Simplify right side
    354,906.69x = 94,897,761,949.31
  5. Step 5: Solve for x
    x = 94,897,761,949.31/354,906.69
  6. Step 6: Final answer
    x = 267,387.92

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1.5x scale

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.