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Finding the Fourth Proportional to 355,145.06, 490,081.44 and 193,997.78

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Solution

The fourth proportional to 355,145.06, 490,081.44 and 193,997.78 is: 267,706.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,145.06 : 490,081.44 = 193,997.78 : x
  2. Step 2: Convert to fraction form
    355,145.06/490,081.44 = 193,997.78/x
  3. Step 3: Cross multiply
    355,145.06x = 490,081.44 × 193,997.78
  4. Step 4: Simplify right side
    355,145.06x = 95,074,711,379.20
  5. Step 5: Solve for x
    x = 95,074,711,379.20/355,145.06
  6. Step 6: Final answer
    x = 267,706.70

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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.