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Finding the Fourth Proportional to 340,930.68, 511,571.28 and 261,479.04

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Solution

The fourth proportional to 340,930.68, 511,571.28 and 261,479.04 is: 392,352.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,930.68 : 511,571.28 = 261,479.04 : x
  2. Step 2: Convert to fraction form
    340,930.68/511,571.28 = 261,479.04/x
  3. Step 3: Cross multiply
    340,930.68x = 511,571.28 × 261,479.04
  4. Step 4: Simplify right side
    340,930.68x = 133,765,167,185.97
  5. Step 5: Solve for x
    x = 133,765,167,185.97/340,930.68
  6. Step 6: Final answer
    x = 392,352.98

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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.