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Finding the Fourth Proportional to 279,169.62, 385,219.11 and 188,722.38

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Solution

The fourth proportional to 279,169.62, 385,219.11 and 188,722.38 is: 260,413.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,169.62 : 385,219.11 = 188,722.38 : x
  2. Step 2: Convert to fraction form
    279,169.62/385,219.11 = 188,722.38/x
  3. Step 3: Cross multiply
    279,169.62x = 385,219.11 × 188,722.38
  4. Step 4: Simplify right side
    279,169.62x = 72,699,467,260.68
  5. Step 5: Solve for x
    x = 72,699,467,260.68/279,169.62
  6. Step 6: Final answer
    x = 260,413.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.