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Finding the Fourth Proportional to 445,509.20, 667,486.20 and 383,301.20

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Solution

The fourth proportional to 445,509.20, 667,486.20 and 383,301.20 is: 574,282.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,509.20 : 667,486.20 = 383,301.20 : x
  2. Step 2: Convert to fraction form
    445,509.20/667,486.20 = 383,301.20/x
  3. Step 3: Cross multiply
    445,509.20x = 667,486.20 × 383,301.20
  4. Step 4: Simplify right side
    445,509.20x = 255,848,261,443.44
  5. Step 5: Solve for x
    x = 255,848,261,443.44/445,509.20
  6. Step 6: Final answer
    x = 574,282.78

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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.