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Finding the Fourth Proportional to 378,203.60, 567,305.40 and 200,619.20

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Solution

The fourth proportional to 378,203.60, 567,305.40 and 200,619.20 is: 300,928.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,203.60 : 567,305.40 = 200,619.20 : x
  2. Step 2: Convert to fraction form
    378,203.60/567,305.40 = 200,619.20/x
  3. Step 3: Cross multiply
    378,203.60x = 567,305.40 × 200,619.20
  4. Step 4: Simplify right side
    378,203.60x = 113,812,355,503.68
  5. Step 5: Solve for x
    x = 113,812,355,503.68/378,203.60
  6. Step 6: Final answer
    x = 300,928.80

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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.