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Finding the Fourth Proportional to 303,928.60, 455,892.90 and 135,529.60

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Solution

The fourth proportional to 303,928.60, 455,892.90 and 135,529.60 is: 203,294.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,928.60 : 455,892.90 = 135,529.60 : x
  2. Step 2: Convert to fraction form
    303,928.60/455,892.90 = 135,529.60/x
  3. Step 3: Cross multiply
    303,928.60x = 455,892.90 × 135,529.60
  4. Step 4: Simplify right side
    303,928.60x = 61,786,982,379.84
  5. Step 5: Solve for x
    x = 61,786,982,379.84/303,928.60
  6. Step 6: Final answer
    x = 203,294.40

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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.