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Finding the Fourth Proportional to 603,843.72, 905,764.98 and 154,563.86

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Solution

The fourth proportional to 603,843.72, 905,764.98 and 154,563.86 is: 231,845.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,843.72 : 905,764.98 = 154,563.86 : x
  2. Step 2: Convert to fraction form
    603,843.72/905,764.98 = 154,563.86/x
  3. Step 3: Cross multiply
    603,843.72x = 905,764.98 × 154,563.86
  4. Step 4: Simplify right side
    603,843.72x = 139,998,527,032.80
  5. Step 5: Solve for x
    x = 139,998,527,032.80/603,843.72
  6. Step 6: Final answer
    x = 231,845.63

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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.