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Finding the Fourth Proportional to 263,104.80, 394,722.72 and 76,116.30

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Solution

The fourth proportional to 263,104.80, 394,722.72 and 76,116.30 is: 114,193.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,104.80 : 394,722.72 = 76,116.30 : x
  2. Step 2: Convert to fraction form
    263,104.80/394,722.72 = 76,116.30/x
  3. Step 3: Cross multiply
    263,104.80x = 394,722.72 × 76,116.30
  4. Step 4: Simplify right side
    263,104.80x = 30,044,832,972.34
  5. Step 5: Solve for x
    x = 30,044,832,972.34/263,104.80
  6. Step 6: Final answer
    x = 114,193.40

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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.