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Finding the Fourth Proportional to 665,249.32, 998,621.80 and 266,171.64

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Solution

The fourth proportional to 665,249.32, 998,621.80 and 266,171.64 is: 399,556.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,249.32 : 998,621.80 = 266,171.64 : x
  2. Step 2: Convert to fraction form
    665,249.32/998,621.80 = 266,171.64/x
  3. Step 3: Cross multiply
    665,249.32x = 998,621.80 × 266,171.64
  4. Step 4: Simplify right side
    665,249.32x = 265,804,802,245.75
  5. Step 5: Solve for x
    x = 265,804,802,245.75/665,249.32
  6. Step 6: Final answer
    x = 399,556.67

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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.