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Finding the Fourth Proportional to 230,469.32, 345,703.52 and 90,129.54

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Solution

The fourth proportional to 230,469.32, 345,703.52 and 90,129.54 is: 135,194.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,469.32 : 345,703.52 = 90,129.54 : x
  2. Step 2: Convert to fraction form
    230,469.32/345,703.52 = 90,129.54/x
  3. Step 3: Cross multiply
    230,469.32x = 345,703.52 × 90,129.54
  4. Step 4: Simplify right side
    230,469.32x = 31,158,099,233.98
  5. Step 5: Solve for x
    x = 31,158,099,233.98/230,469.32
  6. Step 6: Final answer
    x = 135,194.13

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1.5x scale

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.