Home / 257,764.26-386,129-131,399.40

Finding the Fourth Proportional to 257,764.26, 386,129 and 131,399.40

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Solution

The fourth proportional to 257,764.26, 386,129 and 131,399.40 is: 196,835.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,764.26 : 386,129 = 131,399.40 : x
  2. Step 2: Convert to fraction form
    257,764.26/386,129 = 131,399.40/x
  3. Step 3: Cross multiply
    257,764.26x = 386,129 × 131,399.40
  4. Step 4: Simplify right side
    257,764.26x = 50,737,118,922.60
  5. Step 5: Solve for x
    x = 50,737,118,922.60/257,764.26
  6. Step 6: Final answer
    x = 196,835.35

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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.