Home / 220,909.61-331,863.23-131,011.29

Finding the Fourth Proportional to 220,909.61, 331,863.23 and 131,011.29

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Solution

The fourth proportional to 220,909.61, 331,863.23 and 131,011.29 is: 196,812.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,909.61 : 331,863.23 = 131,011.29 : x
  2. Step 2: Convert to fraction form
    220,909.61/331,863.23 = 131,011.29/x
  3. Step 3: Cross multiply
    220,909.61x = 331,863.23 × 131,011.29
  4. Step 4: Simplify right side
    220,909.61x = 43,477,829,865.87
  5. Step 5: Solve for x
    x = 43,477,829,865.87/220,909.61
  6. Step 6: Final answer
    x = 196,812.76

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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.