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Finding the Fourth Proportional to 383,491.62, 530,174.97 and 287,832.24

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Solution

The fourth proportional to 383,491.62, 530,174.97 and 287,832.24 is: 397,926.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,491.62 : 530,174.97 = 287,832.24 : x
  2. Step 2: Convert to fraction form
    383,491.62/530,174.97 = 287,832.24/x
  3. Step 3: Cross multiply
    383,491.62x = 530,174.97 × 287,832.24
  4. Step 4: Simplify right side
    383,491.62x = 152,601,449,207.03
  5. Step 5: Solve for x
    x = 152,601,449,207.03/383,491.62
  6. Step 6: Final answer
    x = 397,926.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.