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Finding the Fourth Proportional to 273,425.92, 410,141.44 and 86,438.40

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Solution

The fourth proportional to 273,425.92, 410,141.44 and 86,438.40 is: 129,658.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,425.92 : 410,141.44 = 86,438.40 : x
  2. Step 2: Convert to fraction form
    273,425.92/410,141.44 = 86,438.40/x
  3. Step 3: Cross multiply
    273,425.92x = 410,141.44 × 86,438.40
  4. Step 4: Simplify right side
    273,425.92x = 35,451,969,847.30
  5. Step 5: Solve for x
    x = 35,451,969,847.30/273,425.92
  6. Step 6: Final answer
    x = 129,658.41

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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.