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Finding the Fourth Proportional to 259,745.80, 389,618.70 and 148,846.60

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Solution

The fourth proportional to 259,745.80, 389,618.70 and 148,846.60 is: 223,269.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,745.80 : 389,618.70 = 148,846.60 : x
  2. Step 2: Convert to fraction form
    259,745.80/389,618.70 = 148,846.60/x
  3. Step 3: Cross multiply
    259,745.80x = 389,618.70 × 148,846.60
  4. Step 4: Simplify right side
    259,745.80x = 57,993,418,791.42
  5. Step 5: Solve for x
    x = 57,993,418,791.42/259,745.80
  6. Step 6: Final answer
    x = 223,269.90

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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.