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Finding the Fourth Proportional to 300,775.30, 451,163.28 and 90,413.22

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Solution

The fourth proportional to 300,775.30, 451,163.28 and 90,413.22 is: 135,619.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,775.30 : 451,163.28 = 90,413.22 : x
  2. Step 2: Convert to fraction form
    300,775.30/451,163.28 = 90,413.22/x
  3. Step 3: Cross multiply
    300,775.30x = 451,163.28 × 90,413.22
  4. Step 4: Simplify right side
    300,775.30x = 40,791,124,890.56
  5. Step 5: Solve for x
    x = 40,791,124,890.56/300,775.30
  6. Step 6: Final answer
    x = 135,619.93

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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.