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Finding the Fourth Proportional to 285,407.37, 428,115.24 and 135,663.03

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Solution

The fourth proportional to 285,407.37, 428,115.24 and 135,663.03 is: 203,496.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,407.37 : 428,115.24 = 135,663.03 : x
  2. Step 2: Convert to fraction form
    285,407.37/428,115.24 = 135,663.03/x
  3. Step 3: Cross multiply
    285,407.37x = 428,115.24 × 135,663.03
  4. Step 4: Simplify right side
    285,407.37x = 58,079,410,647.58
  5. Step 5: Solve for x
    x = 58,079,410,647.58/285,407.37
  6. Step 6: Final answer
    x = 203,496.53

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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.