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Finding the Fourth Proportional to 303,404.85, 455,197.82 and 90,179.84

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Solution

The fourth proportional to 303,404.85, 455,197.82 and 90,179.84 is: 135,296.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,404.85 : 455,197.82 = 90,179.84 : x
  2. Step 2: Convert to fraction form
    303,404.85/455,197.82 = 90,179.84/x
  3. Step 3: Cross multiply
    303,404.85x = 455,197.82 × 90,179.84
  4. Step 4: Simplify right side
    303,404.85x = 41,049,663,849.06
  5. Step 5: Solve for x
    x = 41,049,663,849.06/303,404.85
  6. Step 6: Final answer
    x = 135,296.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.