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Finding the Fourth Proportional to 303,923.60, 455,885.40 and 135,524.60

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Solution

The fourth proportional to 303,923.60, 455,885.40 and 135,524.60 is: 203,286.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,923.60 : 455,885.40 = 135,524.60 : x
  2. Step 2: Convert to fraction form
    303,923.60/455,885.40 = 135,524.60/x
  3. Step 3: Cross multiply
    303,923.60x = 455,885.40 × 135,524.60
  4. Step 4: Simplify right side
    303,923.60x = 61,783,686,480.84
  5. Step 5: Solve for x
    x = 61,783,686,480.84/303,923.60
  6. Step 6: Final answer
    x = 203,286.90

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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.