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Finding the Fourth Proportional to 355,366.11, 490,404.42 and 202,404.27

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Solution

The fourth proportional to 355,366.11, 490,404.42 and 202,404.27 is: 279,317.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,366.11 : 490,404.42 = 202,404.27 : x
  2. Step 2: Convert to fraction form
    355,366.11/490,404.42 = 202,404.27/x
  3. Step 3: Cross multiply
    355,366.11x = 490,404.42 × 202,404.27
  4. Step 4: Simplify right side
    355,366.11x = 99,259,948,634.87
  5. Step 5: Solve for x
    x = 99,259,948,634.87/355,366.11
  6. Step 6: Final answer
    x = 279,317.43

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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.