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Finding the Fourth Proportional to 325,726.40, 488,589.60 and 269,739.20

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Solution

The fourth proportional to 325,726.40, 488,589.60 and 269,739.20 is: 404,608.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,726.40 : 488,589.60 = 269,739.20 : x
  2. Step 2: Convert to fraction form
    325,726.40/488,589.60 = 269,739.20/x
  3. Step 3: Cross multiply
    325,726.40x = 488,589.60 × 269,739.20
  4. Step 4: Simplify right side
    325,726.40x = 131,791,767,832.32
  5. Step 5: Solve for x
    x = 131,791,767,832.32/325,726.40
  6. Step 6: Final answer
    x = 404,608.80

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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.