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Finding the Fourth Proportional to 325,855.70, 489,220.95 and 208,049.30

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Solution

The fourth proportional to 325,855.70, 489,220.95 and 208,049.30 is: 312,353.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,855.70 : 489,220.95 = 208,049.30 : x
  2. Step 2: Convert to fraction form
    325,855.70/489,220.95 = 208,049.30/x
  3. Step 3: Cross multiply
    325,855.70x = 489,220.95 × 208,049.30
  4. Step 4: Simplify right side
    325,855.70x = 101,782,076,192.84
  5. Step 5: Solve for x
    x = 101,782,076,192.84/325,855.70
  6. Step 6: Final answer
    x = 312,353.22

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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.