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Finding the Fourth Proportional to 354,990.98, 489,891.57 and 193,847.96

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Solution

The fourth proportional to 354,990.98, 489,891.57 and 193,847.96 is: 267,512.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,990.98 : 489,891.57 = 193,847.96 : x
  2. Step 2: Convert to fraction form
    354,990.98/489,891.57 = 193,847.96/x
  3. Step 3: Cross multiply
    354,990.98x = 489,891.57 × 193,847.96
  4. Step 4: Simplify right side
    354,990.98x = 94,964,481,465.70
  5. Step 5: Solve for x
    x = 94,964,481,465.70/354,990.98
  6. Step 6: Final answer
    x = 267,512.38

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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.