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Finding the Fourth Proportional to 355,308.64, 490,375.92 and 226,205.88

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Solution

The fourth proportional to 355,308.64, 490,375.92 and 226,205.88 is: 312,195.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,308.64 : 490,375.92 = 226,205.88 : x
  2. Step 2: Convert to fraction form
    355,308.64/490,375.92 = 226,205.88/x
  3. Step 3: Cross multiply
    355,308.64x = 490,375.92 × 226,205.88
  4. Step 4: Simplify right side
    355,308.64x = 110,925,915,523.77
  5. Step 5: Solve for x
    x = 110,925,915,523.77/355,308.64
  6. Step 6: Final answer
    x = 312,195.94

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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.