Home / 285,589.48-428,531.10-135,999.40

Finding the Fourth Proportional to 285,589.48, 428,531.10 and 135,999.40

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Solution

The fourth proportional to 285,589.48, 428,531.10 and 135,999.40 is: 204,069.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,589.48 : 428,531.10 = 135,999.40 : x
  2. Step 2: Convert to fraction form
    285,589.48/428,531.10 = 135,999.40/x
  3. Step 3: Cross multiply
    285,589.48x = 428,531.10 × 135,999.40
  4. Step 4: Simplify right side
    285,589.48x = 58,279,972,481.34
  5. Step 5: Solve for x
    x = 58,279,972,481.34/285,589.48
  6. Step 6: Final answer
    x = 204,069.05

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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.