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Finding the Fourth Proportional to 300,724.40, 415,043.88 and 173,375.12

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Solution

The fourth proportional to 300,724.40, 415,043.88 and 173,375.12 is: 239,283.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,724.40 : 415,043.88 = 173,375.12 : x
  2. Step 2: Convert to fraction form
    300,724.40/415,043.88 = 173,375.12/x
  3. Step 3: Cross multiply
    300,724.40x = 415,043.88 × 173,375.12
  4. Step 4: Simplify right side
    300,724.40x = 71,958,282,500.27
  5. Step 5: Solve for x
    x = 71,958,282,500.27/300,724.40
  6. Step 6: Final answer
    x = 239,283.15

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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.