Home / 221,205.60-331,808.40-126,399.15

Finding the Fourth Proportional to 221,205.60, 331,808.40 and 126,399.15

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Solution

The fourth proportional to 221,205.60, 331,808.40 and 126,399.15 is: 189,598.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,205.60 : 331,808.40 = 126,399.15 : x
  2. Step 2: Convert to fraction form
    221,205.60/331,808.40 = 126,399.15/x
  3. Step 3: Cross multiply
    221,205.60x = 331,808.40 × 126,399.15
  4. Step 4: Simplify right side
    221,205.60x = 41,940,299,722.86
  5. Step 5: Solve for x
    x = 41,940,299,722.86/221,205.60
  6. Step 6: Final answer
    x = 189,598.73

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1.5x scale

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.