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Finding the Fourth Proportional to 231,347.20, 347,020.80 and 204,620.80

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Solution

The fourth proportional to 231,347.20, 347,020.80 and 204,620.80 is: 306,931.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,347.20 : 347,020.80 = 204,620.80 : x
  2. Step 2: Convert to fraction form
    231,347.20/347,020.80 = 204,620.80/x
  3. Step 3: Cross multiply
    231,347.20x = 347,020.80 × 204,620.80
  4. Step 4: Simplify right side
    231,347.20x = 71,007,673,712.64
  5. Step 5: Solve for x
    x = 71,007,673,712.64/231,347.20
  6. Step 6: Final answer
    x = 306,931.20

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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.