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Finding the Fourth Proportional to 479,388.85, 719,404.03 and 198,906.10

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Solution

The fourth proportional to 479,388.85, 719,404.03 and 198,906.10 is: 298,492.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,388.85 : 719,404.03 = 198,906.10 : x
  2. Step 2: Convert to fraction form
    479,388.85/719,404.03 = 198,906.10/x
  3. Step 3: Cross multiply
    479,388.85x = 719,404.03 × 198,906.10
  4. Step 4: Simplify right side
    479,388.85x = 143,093,848,381.71
  5. Step 5: Solve for x
    x = 143,093,848,381.71/479,388.85
  6. Step 6: Final answer
    x = 298,492.23

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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.