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Finding the Fourth Proportional to 355,086.10, 490,021.50 and 193,938.22

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Solution

The fourth proportional to 355,086.10, 490,021.50 and 193,938.22 is: 267,636.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,086.10 : 490,021.50 = 193,938.22 : x
  2. Step 2: Convert to fraction form
    355,086.10/490,021.50 = 193,938.22/x
  3. Step 3: Cross multiply
    355,086.10x = 490,021.50 × 193,938.22
  4. Step 4: Simplify right side
    355,086.10x = 95,033,897,471.73
  5. Step 5: Solve for x
    x = 95,033,897,471.73/355,086.10
  6. Step 6: Final answer
    x = 267,636.21

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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.