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Finding the Fourth Proportional to 207,855.40, 311,739.90 and 89,530.60

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Solution

The fourth proportional to 207,855.40, 311,739.90 and 89,530.60 is: 134,277.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,855.40 : 311,739.90 = 89,530.60 : x
  2. Step 2: Convert to fraction form
    207,855.40/311,739.90 = 89,530.60/x
  3. Step 3: Cross multiply
    207,855.40x = 311,739.90 × 89,530.60
  4. Step 4: Simplify right side
    207,855.40x = 27,910,260,290.94
  5. Step 5: Solve for x
    x = 27,910,260,290.94/207,855.40
  6. Step 6: Final answer
    x = 134,277.29

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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.