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Finding the Fourth Proportional to 270,515.76, 405,509.92 and 112,789.32

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Solution

The fourth proportional to 270,515.76, 405,509.92 and 112,789.32 is: 169,074.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,515.76 : 405,509.92 = 112,789.32 : x
  2. Step 2: Convert to fraction form
    270,515.76/405,509.92 = 112,789.32/x
  3. Step 3: Cross multiply
    270,515.76x = 405,509.92 × 112,789.32
  4. Step 4: Simplify right side
    270,515.76x = 45,737,188,130.05
  5. Step 5: Solve for x
    x = 45,737,188,130.05/270,515.76
  6. Step 6: Final answer
    x = 169,074.02

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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.