Home / 259,747.10-389,620.65-256,247.90

Finding the Fourth Proportional to 259,747.10, 389,620.65 and 256,247.90

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Solution

The fourth proportional to 259,747.10, 389,620.65 and 256,247.90 is: 384,371.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,747.10 : 389,620.65 = 256,247.90 : x
  2. Step 2: Convert to fraction form
    259,747.10/389,620.65 = 256,247.90/x
  3. Step 3: Cross multiply
    259,747.10x = 389,620.65 × 256,247.90
  4. Step 4: Simplify right side
    259,747.10x = 99,839,473,359.14
  5. Step 5: Solve for x
    x = 99,839,473,359.14/259,747.10
  6. Step 6: Final answer
    x = 384,371.85

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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.