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Finding the Fourth Proportional to 449,764.80, 673,869.60 and 212,596.80

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Solution

The fourth proportional to 449,764.80, 673,869.60 and 212,596.80 is: 318,527.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,764.80 : 673,869.60 = 212,596.80 : x
  2. Step 2: Convert to fraction form
    449,764.80/673,869.60 = 212,596.80/x
  3. Step 3: Cross multiply
    449,764.80x = 673,869.60 × 212,596.80
  4. Step 4: Simplify right side
    449,764.80x = 143,262,520,577.28
  5. Step 5: Solve for x
    x = 143,262,520,577.28/449,764.80
  6. Step 6: Final answer
    x = 318,527.64

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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.