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Finding the Fourth Proportional to 355,443.49, 490,512.11 and 194,299.26

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Solution

The fourth proportional to 355,443.49, 490,512.11 and 194,299.26 is: 268,133.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,443.49 : 490,512.11 = 194,299.26 : x
  2. Step 2: Convert to fraction form
    355,443.49/490,512.11 = 194,299.26/x
  3. Step 3: Cross multiply
    355,443.49x = 490,512.11 × 194,299.26
  4. Step 4: Simplify right side
    355,443.49x = 95,306,137,183.12
  5. Step 5: Solve for x
    x = 95,306,137,183.12/355,443.49
  6. Step 6: Final answer
    x = 268,133.02

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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.