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Finding the Fourth Proportional to 330,197.75, 455,672.90 and 179,294.75

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Solution

The fourth proportional to 330,197.75, 455,672.90 and 179,294.75 is: 247,426.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,197.75 : 455,672.90 = 179,294.75 : x
  2. Step 2: Convert to fraction form
    330,197.75/455,672.90 = 179,294.75/x
  3. Step 3: Cross multiply
    330,197.75x = 455,672.90 × 179,294.75
  4. Step 4: Simplify right side
    330,197.75x = 81,699,757,790.80
  5. Step 5: Solve for x
    x = 81,699,757,790.80/330,197.75
  6. Step 6: Final answer
    x = 247,426.76

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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.