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Finding the Fourth Proportional to 355,104.30, 490,086.09 and 202,179.27

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Solution

The fourth proportional to 355,104.30, 490,086.09 and 202,179.27 is: 279,031.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,104.30 : 490,086.09 = 202,179.27 : x
  2. Step 2: Convert to fraction form
    355,104.30/490,086.09 = 202,179.27/x
  3. Step 3: Cross multiply
    355,104.30x = 490,086.09 × 202,179.27
  4. Step 4: Simplify right side
    355,104.30x = 99,085,247,913.35
  5. Step 5: Solve for x
    x = 99,085,247,913.35/355,104.30
  6. Step 6: Final answer
    x = 279,031.39

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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.