Home / 643,189.87-964,784.81-222,236.11

Finding the Fourth Proportional to 643,189.87, 964,784.81 and 222,236.11

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Solution

The fourth proportional to 643,189.87, 964,784.81 and 222,236.11 is: 333,354.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,189.87 : 964,784.81 = 222,236.11 : x
  2. Step 2: Convert to fraction form
    643,189.87/964,784.81 = 222,236.11/x
  3. Step 3: Cross multiply
    643,189.87x = 964,784.81 × 222,236.11
  4. Step 4: Simplify right side
    643,189.87x = 214,410,023,161.49
  5. Step 5: Solve for x
    x = 214,410,023,161.49/643,189.87
  6. Step 6: Final answer
    x = 333,354.17

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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.