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Finding the Fourth Proportional to 665,393.69, 998,376.46 and 216,252.20

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Solution

The fourth proportional to 665,393.69, 998,376.46 and 216,252.20 is: 324,471.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,393.69 : 998,376.46 = 216,252.20 : x
  2. Step 2: Convert to fraction form
    665,393.69/998,376.46 = 216,252.20/x
  3. Step 3: Cross multiply
    665,393.69x = 998,376.46 × 216,252.20
  4. Step 4: Simplify right side
    665,393.69x = 215,901,100,370.70
  5. Step 5: Solve for x
    x = 215,901,100,370.70/665,393.69
  6. Step 6: Final answer
    x = 324,471.22

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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.