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Finding the Fourth Proportional to 355,239.11, 490,215.56 and 194,099.74

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Solution

The fourth proportional to 355,239.11, 490,215.56 and 194,099.74 is: 267,849.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,239.11 : 490,215.56 = 194,099.74 : x
  2. Step 2: Convert to fraction form
    355,239.11/490,215.56 = 194,099.74/x
  3. Step 3: Cross multiply
    355,239.11x = 490,215.56 × 194,099.74
  4. Step 4: Simplify right side
    355,239.11x = 95,150,711,999.66
  5. Step 5: Solve for x
    x = 95,150,711,999.66/355,239.11
  6. Step 6: Final answer
    x = 267,849.76

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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.