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Finding the Fourth Proportional to 325,039.75, 487,649.33 and 135,589.16

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Solution

The fourth proportional to 325,039.75, 487,649.33 and 135,589.16 is: 203,421.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,039.75 : 487,649.33 = 135,589.16 : x
  2. Step 2: Convert to fraction form
    325,039.75/487,649.33 = 135,589.16/x
  3. Step 3: Cross multiply
    325,039.75x = 487,649.33 × 135,589.16
  4. Step 4: Simplify right side
    325,039.75x = 66,119,962,351.32
  5. Step 5: Solve for x
    x = 66,119,962,351.32/325,039.75
  6. Step 6: Final answer
    x = 203,421.16

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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.