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Finding the Fourth Proportional to 325,835.70, 489,190.95 and 208,029.30

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Solution

The fourth proportional to 325,835.70, 489,190.95 and 208,029.30 is: 312,323.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,835.70 : 489,190.95 = 208,029.30 : x
  2. Step 2: Convert to fraction form
    325,835.70/489,190.95 = 208,029.30/x
  3. Step 3: Cross multiply
    325,835.70x = 489,190.95 × 208,029.30
  4. Step 4: Simplify right side
    325,835.70x = 101,766,050,894.84
  5. Step 5: Solve for x
    x = 101,766,050,894.84/325,835.70
  6. Step 6: Final answer
    x = 312,323.21

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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.