Home / 329,027.20-493,771.20-142,172.80

Finding the Fourth Proportional to 329,027.20, 493,771.20 and 142,172.80

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Solution

The fourth proportional to 329,027.20, 493,771.20 and 142,172.80 is: 213,358.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,027.20 : 493,771.20 = 142,172.80 : x
  2. Step 2: Convert to fraction form
    329,027.20/493,771.20 = 142,172.80/x
  3. Step 3: Cross multiply
    329,027.20x = 493,771.20 × 142,172.80
  4. Step 4: Simplify right side
    329,027.20x = 70,200,834,063.36
  5. Step 5: Solve for x
    x = 70,200,834,063.36/329,027.20
  6. Step 6: Final answer
    x = 213,358.76

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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.