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Finding the Fourth Proportional to 325,635, 449,390.09 and 189,647.03

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Solution

The fourth proportional to 325,635, 449,390.09 and 189,647.03 is: 261,720.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,635 : 449,390.09 = 189,647.03 : x
  2. Step 2: Convert to fraction form
    325,635/449,390.09 = 189,647.03/x
  3. Step 3: Cross multiply
    325,635x = 449,390.09 × 189,647.03
  4. Step 4: Simplify right side
    325,635x = 85,225,492,684.75
  5. Step 5: Solve for x
    x = 85,225,492,684.75/325,635
  6. Step 6: Final answer
    x = 261,720.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.