Home / 257,914.23-386,694.89-131,309.49

Finding the Fourth Proportional to 257,914.23, 386,694.89 and 131,309.49

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Solution

The fourth proportional to 257,914.23, 386,694.89 and 131,309.49 is: 196,874.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,914.23 : 386,694.89 = 131,309.49 : x
  2. Step 2: Convert to fraction form
    257,914.23/386,694.89 = 131,309.49/x
  3. Step 3: Cross multiply
    257,914.23x = 386,694.89 × 131,309.49
  4. Step 4: Simplify right side
    257,914.23x = 50,776,708,134.96
  5. Step 5: Solve for x
    x = 50,776,708,134.96/257,914.23
  6. Step 6: Final answer
    x = 196,874.40

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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.