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Finding the Fourth Proportional to 303,859.20, 455,132.70 and 264,493.20

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Solution

The fourth proportional to 303,859.20, 455,132.70 and 264,493.20 is: 396,168.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,859.20 : 455,132.70 = 264,493.20 : x
  2. Step 2: Convert to fraction form
    303,859.20/455,132.70 = 264,493.20/x
  3. Step 3: Cross multiply
    303,859.20x = 455,132.70 × 264,493.20
  4. Step 4: Simplify right side
    303,859.20x = 120,379,504,247.64
  5. Step 5: Solve for x
    x = 120,379,504,247.64/303,859.20
  6. Step 6: Final answer
    x = 396,168.70

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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.