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Finding the Fourth Proportional to 663,310.80, 994,771.80 and 308,239.20

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Solution

The fourth proportional to 663,310.80, 994,771.80 and 308,239.20 is: 462,268.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,310.80 : 994,771.80 = 308,239.20 : x
  2. Step 2: Convert to fraction form
    663,310.80/994,771.80 = 308,239.20/x
  3. Step 3: Cross multiply
    663,310.80x = 994,771.80 × 308,239.20
  4. Step 4: Simplify right side
    663,310.80x = 306,627,663,814.56
  5. Step 5: Solve for x
    x = 306,627,663,814.56/663,310.80
  6. Step 6: Final answer
    x = 462,268.46

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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.