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Finding the Fourth Proportional to 323,499.85, 485,249.78 and 308,984.65

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Solution

The fourth proportional to 323,499.85, 485,249.78 and 308,984.65 is: 463,476.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,499.85 : 485,249.78 = 308,984.65 : x
  2. Step 2: Convert to fraction form
    323,499.85/485,249.78 = 308,984.65/x
  3. Step 3: Cross multiply
    323,499.85x = 485,249.78 × 308,984.65
  4. Step 4: Simplify right side
    323,499.85x = 149,934,731,890.95
  5. Step 5: Solve for x
    x = 149,934,731,890.95/323,499.85
  6. Step 6: Final answer
    x = 463,476.98

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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.