Home / 257,769.68-386,499.18-115,589.21

Finding the Fourth Proportional to 257,769.68, 386,499.18 and 115,589.21

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Solution

The fourth proportional to 257,769.68, 386,499.18 and 115,589.21 is: 173,314.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,769.68 : 386,499.18 = 115,589.21 : x
  2. Step 2: Convert to fraction form
    257,769.68/386,499.18 = 115,589.21/x
  3. Step 3: Cross multiply
    257,769.68x = 386,499.18 × 115,589.21
  4. Step 4: Simplify right side
    257,769.68x = 44,675,134,881.85
  5. Step 5: Solve for x
    x = 44,675,134,881.85/257,769.68
  6. Step 6: Final answer
    x = 173,314.16

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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.