Home / 221,899.92-306,198.27-131,259.30

Finding the Fourth Proportional to 221,899.92, 306,198.27 and 131,259.30

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Solution

The fourth proportional to 221,899.92, 306,198.27 and 131,259.30 is: 181,123.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,899.92 : 306,198.27 = 131,259.30 : x
  2. Step 2: Convert to fraction form
    221,899.92/306,198.27 = 131,259.30/x
  3. Step 3: Cross multiply
    221,899.92x = 306,198.27 × 131,259.30
  4. Step 4: Simplify right side
    221,899.92x = 40,191,370,581.41
  5. Step 5: Solve for x
    x = 40,191,370,581.41/221,899.92
  6. Step 6: Final answer
    x = 181,123.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.