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Finding the Fourth Proportional to 489,191.30, 733,859.86 and 173,621.78

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Solution

The fourth proportional to 489,191.30, 733,859.86 and 173,621.78 is: 260,458.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,191.30 : 733,859.86 = 173,621.78 : x
  2. Step 2: Convert to fraction form
    489,191.30/733,859.86 = 173,621.78/x
  3. Step 3: Cross multiply
    489,191.30x = 733,859.86 × 173,621.78
  4. Step 4: Simplify right side
    489,191.30x = 127,414,055,163.75
  5. Step 5: Solve for x
    x = 127,414,055,163.75/489,191.30
  6. Step 6: Final answer
    x = 260,458.55

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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.