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Finding the Fourth Proportional to 345,906.20, 518,571.30 and 146,379.80

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Solution

The fourth proportional to 345,906.20, 518,571.30 and 146,379.80 is: 219,447.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,906.20 : 518,571.30 = 146,379.80 : x
  2. Step 2: Convert to fraction form
    345,906.20/518,571.30 = 146,379.80/x
  3. Step 3: Cross multiply
    345,906.20x = 518,571.30 × 146,379.80
  4. Step 4: Simplify right side
    345,906.20x = 75,908,363,179.74
  5. Step 5: Solve for x
    x = 75,908,363,179.74/345,906.20
  6. Step 6: Final answer
    x = 219,447.82

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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.