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Finding the Fourth Proportional to 663,505.25, 995,257.88 and 220,273.25

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Solution

The fourth proportional to 663,505.25, 995,257.88 and 220,273.25 is: 330,409.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,505.25 : 995,257.88 = 220,273.25 : x
  2. Step 2: Convert to fraction form
    663,505.25/995,257.88 = 220,273.25/x
  3. Step 3: Cross multiply
    663,505.25x = 995,257.88 × 220,273.25
  4. Step 4: Simplify right side
    663,505.25x = 219,228,686,714.34
  5. Step 5: Solve for x
    x = 219,228,686,714.34/663,505.25
  6. Step 6: Final answer
    x = 330,409.88

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Double scale
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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.