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Finding the Fourth Proportional to 617,832.20, 926,748.30 and 218,469.80

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Solution

The fourth proportional to 617,832.20, 926,748.30 and 218,469.80 is: 327,704.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,832.20 : 926,748.30 = 218,469.80 : x
  2. Step 2: Convert to fraction form
    617,832.20/926,748.30 = 218,469.80/x
  3. Step 3: Cross multiply
    617,832.20x = 926,748.30 × 218,469.80
  4. Step 4: Simplify right side
    617,832.20x = 202,466,515,751.34
  5. Step 5: Solve for x
    x = 202,466,515,751.34/617,832.20
  6. Step 6: Final answer
    x = 327,704.70

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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.