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Finding the Fourth Proportional to 200,245.79, 300,413.67 and 67,122.65

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Solution

The fourth proportional to 200,245.79, 300,413.67 and 67,122.65 is: 100,699.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,245.79 : 300,413.67 = 67,122.65 : x
  2. Step 2: Convert to fraction form
    200,245.79/300,413.67 = 67,122.65/x
  3. Step 3: Cross multiply
    200,245.79x = 300,413.67 × 67,122.65
  4. Step 4: Simplify right side
    200,245.79x = 20,164,560,124.56
  5. Step 5: Solve for x
    x = 20,164,560,124.56/200,245.79
  6. Step 6: Final answer
    x = 100,699.05

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1.5x scale

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.