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Finding the Fourth Proportional to 408,231.45, 612,378.09 and 108,710.82

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Solution

The fourth proportional to 408,231.45, 612,378.09 and 108,710.82 is: 163,074.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,231.45 : 612,378.09 = 108,710.82 : x
  2. Step 2: Convert to fraction form
    408,231.45/612,378.09 = 108,710.82/x
  3. Step 3: Cross multiply
    408,231.45x = 612,378.09 × 108,710.82
  4. Step 4: Simplify right side
    408,231.45x = 66,572,124,313.93
  5. Step 5: Solve for x
    x = 66,572,124,313.93/408,231.45
  6. Step 6: Final answer
    x = 163,074.46

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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.