Home / 257,721.46-386,426.84-115,541

Finding the Fourth Proportional to 257,721.46, 386,426.84 and 115,541

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Solution

The fourth proportional to 257,721.46, 386,426.84 and 115,541 is: 173,241.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,721.46 : 386,426.84 = 115,541 : x
  2. Step 2: Convert to fraction form
    257,721.46/386,426.84 = 115,541/x
  3. Step 3: Cross multiply
    257,721.46x = 386,426.84 × 115,541
  4. Step 4: Simplify right side
    257,721.46x = 44,648,143,520.44
  5. Step 5: Solve for x
    x = 44,648,143,520.44/257,721.46
  6. Step 6: Final answer
    x = 173,241.85

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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.