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Finding the Fourth Proportional to 355,124.28, 490,086.06 and 204,221.28

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Solution

The fourth proportional to 355,124.28, 490,086.06 and 204,221.28 is: 281,833.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,124.28 : 490,086.06 = 204,221.28 : x
  2. Step 2: Convert to fraction form
    355,124.28/490,086.06 = 204,221.28/x
  3. Step 3: Cross multiply
    355,124.28x = 490,086.06 × 204,221.28
  4. Step 4: Simplify right side
    355,124.28x = 100,086,002,483.36
  5. Step 5: Solve for x
    x = 100,086,002,483.36/355,124.28
  6. Step 6: Final answer
    x = 281,833.74

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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.