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Finding the Fourth Proportional to 617,687.28, 926,530.92 and 218,108.88

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Solution

The fourth proportional to 617,687.28, 926,530.92 and 218,108.88 is: 327,163.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,687.28 : 926,530.92 = 218,108.88 : x
  2. Step 2: Convert to fraction form
    617,687.28/926,530.92 = 218,108.88/x
  3. Step 3: Cross multiply
    617,687.28x = 926,530.92 × 218,108.88
  4. Step 4: Simplify right side
    617,687.28x = 202,084,621,246.57
  5. Step 5: Solve for x
    x = 202,084,621,246.57/617,687.28
  6. Step 6: Final answer
    x = 327,163.32

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Similar ratio
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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.