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Finding the Fourth Proportional to 479,568, 719,492.97 and 142,611.24

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Solution

The fourth proportional to 479,568, 719,492.97 and 142,611.24 is: 213,958.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,568 : 719,492.97 = 142,611.24 : x
  2. Step 2: Convert to fraction form
    479,568/719,492.97 = 142,611.24/x
  3. Step 3: Cross multiply
    479,568x = 719,492.97 × 142,611.24
  4. Step 4: Simplify right side
    479,568x = 102,607,784,622.98
  5. Step 5: Solve for x
    x = 102,607,784,622.98/479,568
  6. Step 6: Final answer
    x = 213,958.78

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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.