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Finding the Fourth Proportional to 355,243.67, 490,221.69 and 194,104.25

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Solution

The fourth proportional to 355,243.67, 490,221.69 and 194,104.25 is: 267,855.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,243.67 : 490,221.69 = 194,104.25 : x
  2. Step 2: Convert to fraction form
    355,243.67/490,221.69 = 194,104.25/x
  3. Step 3: Cross multiply
    355,243.67x = 490,221.69 × 194,104.25
  4. Step 4: Simplify right side
    355,243.67x = 95,154,113,471.18
  5. Step 5: Solve for x
    x = 95,154,113,471.18/355,243.67
  6. Step 6: Final answer
    x = 267,855.90

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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.