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Finding the Fourth Proportional to 665,478.80, 998,218.20 and 222,246.80

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Solution

The fourth proportional to 665,478.80, 998,218.20 and 222,246.80 is: 333,370.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,478.80 : 998,218.20 = 222,246.80 : x
  2. Step 2: Convert to fraction form
    665,478.80/998,218.20 = 222,246.80/x
  3. Step 3: Cross multiply
    665,478.80x = 998,218.20 × 222,246.80
  4. Step 4: Simplify right side
    665,478.80x = 221,850,800,651.76
  5. Step 5: Solve for x
    x = 221,850,800,651.76/665,478.80
  6. Step 6: Final answer
    x = 333,370.20

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Half scale
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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.