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Finding the Fourth Proportional to 617,861.20, 926,791.80 and 218,498.80

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Solution

The fourth proportional to 617,861.20, 926,791.80 and 218,498.80 is: 327,748.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,861.20 : 926,791.80 = 218,498.80 : x
  2. Step 2: Convert to fraction form
    617,861.20/926,791.80 = 218,498.80/x
  3. Step 3: Cross multiply
    617,861.20x = 926,791.80 × 218,498.80
  4. Step 4: Simplify right side
    617,861.20x = 202,502,896,149.84
  5. Step 5: Solve for x
    x = 202,502,896,149.84/617,861.20
  6. Step 6: Final answer
    x = 327,748.20

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Similar ratio
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1.5x scale

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.