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Finding the Fourth Proportional to 355,426.08, 490,494.96 and 194,276.64

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Solution

The fourth proportional to 355,426.08, 490,494.96 and 194,276.64 is: 268,105.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,426.08 : 490,494.96 = 194,276.64 : x
  2. Step 2: Convert to fraction form
    355,426.08/490,494.96 = 194,276.64/x
  3. Step 3: Cross multiply
    355,426.08x = 490,494.96 × 194,276.64
  4. Step 4: Simplify right side
    355,426.08x = 95,291,712,765.73
  5. Step 5: Solve for x
    x = 95,291,712,765.73/355,426.08
  6. Step 6: Final answer
    x = 268,105.57

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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.