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Finding the Fourth Proportional to 221,412.40, 332,118.60 and 204,305.20

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Solution

The fourth proportional to 221,412.40, 332,118.60 and 204,305.20 is: 306,457.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,412.40 : 332,118.60 = 204,305.20 : x
  2. Step 2: Convert to fraction form
    221,412.40/332,118.60 = 204,305.20/x
  3. Step 3: Cross multiply
    221,412.40x = 332,118.60 × 204,305.20
  4. Step 4: Simplify right side
    221,412.40x = 67,853,556,996.72
  5. Step 5: Solve for x
    x = 67,853,556,996.72/221,412.40
  6. Step 6: Final answer
    x = 306,457.80

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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.