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Finding the Fourth Proportional to 298,571.13, 447,413.83 and 219,297.85

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Solution

The fourth proportional to 298,571.13, 447,413.83 and 219,297.85 is: 328,621.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,571.13 : 447,413.83 = 219,297.85 : x
  2. Step 2: Convert to fraction form
    298,571.13/447,413.83 = 219,297.85/x
  3. Step 3: Cross multiply
    298,571.13x = 447,413.83 × 219,297.85
  4. Step 4: Simplify right side
    298,571.13x = 98,116,889,312.49
  5. Step 5: Solve for x
    x = 98,116,889,312.49/298,571.13
  6. Step 6: Final answer
    x = 328,621.49

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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.