Home / 330,439.20-495,380.16-143,309.76

Finding the Fourth Proportional to 330,439.20, 495,380.16 and 143,309.76

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Solution

The fourth proportional to 330,439.20, 495,380.16 and 143,309.76 is: 214,843.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,439.20 : 495,380.16 = 143,309.76 : x
  2. Step 2: Convert to fraction form
    330,439.20/495,380.16 = 143,309.76/x
  3. Step 3: Cross multiply
    330,439.20x = 495,380.16 × 143,309.76
  4. Step 4: Simplify right side
    330,439.20x = 70,992,811,838.36
  5. Step 5: Solve for x
    x = 70,992,811,838.36/330,439.20
  6. Step 6: Final answer
    x = 214,843.80

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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.