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Finding the Fourth Proportional to 408,118.12, 612,240.60 and 208,330.36

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Solution

The fourth proportional to 408,118.12, 612,240.60 and 208,330.36 is: 312,527.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,118.12 : 612,240.60 = 208,330.36 : x
  2. Step 2: Convert to fraction form
    408,118.12/612,240.60 = 208,330.36/x
  3. Step 3: Cross multiply
    408,118.12x = 612,240.60 × 208,330.36
  4. Step 4: Simplify right side
    408,118.12x = 127,548,304,604.62
  5. Step 5: Solve for x
    x = 127,548,304,604.62/408,118.12
  6. Step 6: Final answer
    x = 312,527.91

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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.