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Finding the Fourth Proportional to 306,522.24, 422,861.76 and 221,504.64

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Solution

The fourth proportional to 306,522.24, 422,861.76 and 221,504.64 is: 305,576.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,522.24 : 422,861.76 = 221,504.64 : x
  2. Step 2: Convert to fraction form
    306,522.24/422,861.76 = 221,504.64/x
  3. Step 3: Cross multiply
    306,522.24x = 422,861.76 × 221,504.64
  4. Step 4: Simplify right side
    306,522.24x = 93,665,841,918.57
  5. Step 5: Solve for x
    x = 93,665,841,918.57/306,522.24
  6. Step 6: Final answer
    x = 305,576.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.