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Finding the Fourth Proportional to 354,679.72, 489,469.82 and 193,543.60

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Solution

The fourth proportional to 354,679.72, 489,469.82 and 193,543.60 is: 267,096.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,679.72 : 489,469.82 = 193,543.60 : x
  2. Step 2: Convert to fraction form
    354,679.72/489,469.82 = 193,543.60/x
  3. Step 3: Cross multiply
    354,679.72x = 489,469.82 × 193,543.60
  4. Step 4: Simplify right side
    354,679.72x = 94,733,751,054.15
  5. Step 5: Solve for x
    x = 94,733,751,054.15/354,679.72
  6. Step 6: Final answer
    x = 267,096.61

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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.