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Finding the Fourth Proportional to 639,082.88, 958,624.64 and 218,362.88

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Solution

The fourth proportional to 639,082.88, 958,624.64 and 218,362.88 is: 327,544.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,082.88 : 958,624.64 = 218,362.88 : x
  2. Step 2: Convert to fraction form
    639,082.88/958,624.64 = 218,362.88/x
  3. Step 3: Cross multiply
    639,082.88x = 958,624.64 × 218,362.88
  4. Step 4: Simplify right side
    639,082.88x = 209,328,037,229.36
  5. Step 5: Solve for x
    x = 209,328,037,229.36/639,082.88
  6. Step 6: Final answer
    x = 327,544.43

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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.