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Finding the Fourth Proportional to 300,942.45, 451,413.68 and 165,640.05

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Solution

The fourth proportional to 300,942.45, 451,413.68 and 165,640.05 is: 248,460.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,942.45 : 451,413.68 = 165,640.05 : x
  2. Step 2: Convert to fraction form
    300,942.45/451,413.68 = 165,640.05/x
  3. Step 3: Cross multiply
    300,942.45x = 451,413.68 × 165,640.05
  4. Step 4: Simplify right side
    300,942.45x = 74,772,183,697.68
  5. Step 5: Solve for x
    x = 74,772,183,697.68/300,942.45
  6. Step 6: Final answer
    x = 248,460.08

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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.