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Finding the Fourth Proportional to 355,091.43, 490,026.17 and 193,946.86

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Solution

The fourth proportional to 355,091.43, 490,026.17 and 193,946.86 is: 267,646.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,091.43 : 490,026.17 = 193,946.86 : x
  2. Step 2: Convert to fraction form
    355,091.43/490,026.17 = 193,946.86/x
  3. Step 3: Cross multiply
    355,091.43x = 490,026.17 × 193,946.86
  4. Step 4: Simplify right side
    355,091.43x = 95,039,036,989.33
  5. Step 5: Solve for x
    x = 95,039,036,989.33/355,091.43
  6. Step 6: Final answer
    x = 267,646.66

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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.