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Finding the Fourth Proportional to 223,480.80, 335,221.20 and 208,609.20

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Solution

The fourth proportional to 223,480.80, 335,221.20 and 208,609.20 is: 312,913.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,480.80 : 335,221.20 = 208,609.20 : x
  2. Step 2: Convert to fraction form
    223,480.80/335,221.20 = 208,609.20/x
  3. Step 3: Cross multiply
    223,480.80x = 335,221.20 × 208,609.20
  4. Step 4: Simplify right side
    223,480.80x = 69,930,226,355.04
  5. Step 5: Solve for x
    x = 69,930,226,355.04/223,480.80
  6. Step 6: Final answer
    x = 312,913.80

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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.