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Finding the Fourth Proportional to 230,240.89, 315,431.17 and 221,611.79

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Solution

The fourth proportional to 230,240.89, 315,431.17 and 221,611.79 is: 303,609.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,240.89 : 315,431.17 = 221,611.79 : x
  2. Step 2: Convert to fraction form
    230,240.89/315,431.17 = 221,611.79/x
  3. Step 3: Cross multiply
    230,240.89x = 315,431.17 × 221,611.79
  4. Step 4: Simplify right side
    230,240.89x = 69,903,266,440.04
  5. Step 5: Solve for x
    x = 69,903,266,440.04/230,240.89
  6. Step 6: Final answer
    x = 303,609.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.