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Finding the Fourth Proportional to 354,843.64, 489,680.04 and 193,705.48

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Solution

The fourth proportional to 354,843.64, 489,680.04 and 193,705.48 is: 267,311.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,843.64 : 489,680.04 = 193,705.48 : x
  2. Step 2: Convert to fraction form
    354,843.64/489,680.04 = 193,705.48/x
  3. Step 3: Cross multiply
    354,843.64x = 489,680.04 × 193,705.48
  4. Step 4: Simplify right side
    354,843.64x = 94,853,707,194.62
  5. Step 5: Solve for x
    x = 94,853,707,194.62/354,843.64
  6. Step 6: Final answer
    x = 267,311.28

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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.