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Finding the Fourth Proportional to 330,544.41, 495,816.72 and 90,660.81

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Solution

The fourth proportional to 330,544.41, 495,816.72 and 90,660.81 is: 135,991.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,544.41 : 495,816.72 = 90,660.81 : x
  2. Step 2: Convert to fraction form
    330,544.41/495,816.72 = 90,660.81/x
  3. Step 3: Cross multiply
    330,544.41x = 495,816.72 × 90,660.81
  4. Step 4: Simplify right side
    330,544.41x = 44,951,145,446.74
  5. Step 5: Solve for x
    x = 44,951,145,446.74/330,544.41
  6. Step 6: Final answer
    x = 135,991.24

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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.