Home / 672,127.21-1,008,190.83-198,775.72

Finding the Fourth Proportional to 672,127.21, 1,008,190.83 and 198,775.72

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Solution

The fourth proportional to 672,127.21, 1,008,190.83 and 198,775.72 is: 298,163.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,127.21 : 1,008,190.83 = 198,775.72 : x
  2. Step 2: Convert to fraction form
    672,127.21/1,008,190.83 = 198,775.72/x
  3. Step 3: Cross multiply
    672,127.21x = 1,008,190.83 × 198,775.72
  4. Step 4: Simplify right side
    672,127.21x = 200,403,858,130.65
  5. Step 5: Solve for x
    x = 200,403,858,130.65/672,127.21
  6. Step 6: Final answer
    x = 298,163.58

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Double scale
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Similar ratio
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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.