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Finding the Fourth Proportional to 663,518.76, 995,278.16 and 220,286.76

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Solution

The fourth proportional to 663,518.76, 995,278.16 and 220,286.76 is: 330,430.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,518.76 : 995,278.16 = 220,286.76 : x
  2. Step 2: Convert to fraction form
    663,518.76/995,278.16 = 220,286.76/x
  3. Step 3: Cross multiply
    663,518.76x = 995,278.16 × 220,286.76
  4. Step 4: Simplify right side
    663,518.76x = 219,246,601,165.16
  5. Step 5: Solve for x
    x = 219,246,601,165.16/663,518.76
  6. Step 6: Final answer
    x = 330,430.15

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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.