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Finding the Fourth Proportional to 663,327.40, 994,991.10 and 220,095.40

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Solution

The fourth proportional to 663,327.40, 994,991.10 and 220,095.40 is: 330,143.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,327.40 : 994,991.10 = 220,095.40 : x
  2. Step 2: Convert to fraction form
    663,327.40/994,991.10 = 220,095.40/x
  3. Step 3: Cross multiply
    663,327.40x = 994,991.10 × 220,095.40
  4. Step 4: Simplify right side
    663,327.40x = 218,992,964,150.94
  5. Step 5: Solve for x
    x = 218,992,964,150.94/663,327.40
  6. Step 6: Final answer
    x = 330,143.10

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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.