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Finding the Fourth Proportional to 230,380.29, 345,599.66 and 90,120.69

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Solution

The fourth proportional to 230,380.29, 345,599.66 and 90,120.69 is: 135,192.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,380.29 : 345,599.66 = 90,120.69 : x
  2. Step 2: Convert to fraction form
    230,380.29/345,599.66 = 90,120.69/x
  3. Step 3: Cross multiply
    230,380.29x = 345,599.66 × 90,120.69
  4. Step 4: Simplify right side
    230,380.29x = 31,145,679,372.36
  5. Step 5: Solve for x
    x = 31,145,679,372.36/230,380.29
  6. Step 6: Final answer
    x = 135,192.47

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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.