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Finding the Fourth Proportional to 479,452.21, 718,990.32 and 179,769.42

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Solution

The fourth proportional to 479,452.21, 718,990.32 and 179,769.42 is: 269,583.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,452.21 : 718,990.32 = 179,769.42 : x
  2. Step 2: Convert to fraction form
    479,452.21/718,990.32 = 179,769.42/x
  3. Step 3: Cross multiply
    479,452.21x = 718,990.32 × 179,769.42
  4. Step 4: Simplify right side
    479,452.21x = 129,252,472,812.01
  5. Step 5: Solve for x
    x = 129,252,472,812.01/479,452.21
  6. Step 6: Final answer
    x = 269,583.64

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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.