Home / 259,746.20-389,619.30-218,411.90

Finding the Fourth Proportional to 259,746.20, 389,619.30 and 218,411.90

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Solution

The fourth proportional to 259,746.20, 389,619.30 and 218,411.90 is: 327,617.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,746.20 : 389,619.30 = 218,411.90 : x
  2. Step 2: Convert to fraction form
    259,746.20/389,619.30 = 218,411.90/x
  3. Step 3: Cross multiply
    259,746.20x = 389,619.30 × 218,411.90
  4. Step 4: Simplify right side
    259,746.20x = 85,097,491,589.67
  5. Step 5: Solve for x
    x = 85,097,491,589.67/259,746.20
  6. Step 6: Final answer
    x = 327,617.85

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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.