Home / 259,942.82-389,928.10-82,464.02

Finding the Fourth Proportional to 259,942.82, 389,928.10 and 82,464.02

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Solution

The fourth proportional to 259,942.82, 389,928.10 and 82,464.02 is: 123,700.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,942.82 : 389,928.10 = 82,464.02 : x
  2. Step 2: Convert to fraction form
    259,942.82/389,928.10 = 82,464.02/x
  3. Step 3: Cross multiply
    259,942.82x = 389,928.10 × 82,464.02
  4. Step 4: Simplify right side
    259,942.82x = 32,155,038,636.96
  5. Step 5: Solve for x
    x = 32,155,038,636.96/259,942.82
  6. Step 6: Final answer
    x = 123,700.43

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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.