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Finding the Fourth Proportional to 663,019.85, 994,086.90 and 207,456.81

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Solution

The fourth proportional to 663,019.85, 994,086.90 and 207,456.81 is: 311,046.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,019.85 : 994,086.90 = 207,456.81 : x
  2. Step 2: Convert to fraction form
    663,019.85/994,086.90 = 207,456.81/x
  3. Step 3: Cross multiply
    663,019.85x = 994,086.90 × 207,456.81
  4. Step 4: Simplify right side
    663,019.85x = 206,230,097,136.79
  5. Step 5: Solve for x
    x = 206,230,097,136.79/663,019.85
  6. Step 6: Final answer
    x = 311,046.64

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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.