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Finding the Fourth Proportional to 340,959.87, 511,357.68 and 104,304.60

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Solution

The fourth proportional to 340,959.87, 511,357.68 and 104,304.60 is: 156,431.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,959.87 : 511,357.68 = 104,304.60 : x
  2. Step 2: Convert to fraction form
    340,959.87/511,357.68 = 104,304.60/x
  3. Step 3: Cross multiply
    340,959.87x = 511,357.68 × 104,304.60
  4. Step 4: Simplify right side
    340,959.87x = 53,336,958,269.33
  5. Step 5: Solve for x
    x = 53,336,958,269.33/340,959.87
  6. Step 6: Final answer
    x = 156,431.78

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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.