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Finding the Fourth Proportional to 300,685.75, 451,055.27 and 79,069.75

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Solution

The fourth proportional to 300,685.75, 451,055.27 and 79,069.75 is: 118,611.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,685.75 : 451,055.27 = 79,069.75 : x
  2. Step 2: Convert to fraction form
    300,685.75/451,055.27 = 79,069.75/x
  3. Step 3: Cross multiply
    300,685.75x = 451,055.27 × 79,069.75
  4. Step 4: Simplify right side
    300,685.75x = 35,664,827,435.08
  5. Step 5: Solve for x
    x = 35,664,827,435.08/300,685.75
  6. Step 6: Final answer
    x = 118,611.63

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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.