Home / 521,542.26-782,190.63-142,372.85

Finding the Fourth Proportional to 521,542.26, 782,190.63 and 142,372.85

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Solution

The fourth proportional to 521,542.26, 782,190.63 and 142,372.85 is: 213,525.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,542.26 : 782,190.63 = 142,372.85 : x
  2. Step 2: Convert to fraction form
    521,542.26/782,190.63 = 142,372.85/x
  3. Step 3: Cross multiply
    521,542.26x = 782,190.63 × 142,372.85
  4. Step 4: Simplify right side
    521,542.26x = 111,362,711,191.87
  5. Step 5: Solve for x
    x = 111,362,711,191.87/521,542.26
  6. Step 6: Final answer
    x = 213,525.77

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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.