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Finding the Fourth Proportional to 310,183.40, 428,163.08 and 187,682.10

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Solution

The fourth proportional to 310,183.40, 428,163.08 and 187,682.10 is: 259,067.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,183.40 : 428,163.08 = 187,682.10 : x
  2. Step 2: Convert to fraction form
    310,183.40/428,163.08 = 187,682.10/x
  3. Step 3: Cross multiply
    310,183.40x = 428,163.08 × 187,682.10
  4. Step 4: Simplify right side
    310,183.40x = 80,358,545,996.87
  5. Step 5: Solve for x
    x = 80,358,545,996.87/310,183.40
  6. Step 6: Final answer
    x = 259,067.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.