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Finding the Fourth Proportional to 221,319.72, 332,311.68 and 126,656.80

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Solution

The fourth proportional to 221,319.72, 332,311.68 and 126,656.80 is: 190,175.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,319.72 : 332,311.68 = 126,656.80 : x
  2. Step 2: Convert to fraction form
    221,319.72/332,311.68 = 126,656.80/x
  3. Step 3: Cross multiply
    221,319.72x = 332,311.68 × 126,656.80
  4. Step 4: Simplify right side
    221,319.72x = 42,089,533,991.42
  5. Step 5: Solve for x
    x = 42,089,533,991.42/221,319.72
  6. Step 6: Final answer
    x = 190,175.25

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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.