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Finding the Fourth Proportional to 255,739.60, 383,455.80 and 131,323.60

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Solution

The fourth proportional to 255,739.60, 383,455.80 and 131,323.60 is: 196,906.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,739.60 : 383,455.80 = 131,323.60 : x
  2. Step 2: Convert to fraction form
    255,739.60/383,455.80 = 131,323.60/x
  3. Step 3: Cross multiply
    255,739.60x = 383,455.80 × 131,323.60
  4. Step 4: Simplify right side
    255,739.60x = 50,356,796,096.88
  5. Step 5: Solve for x
    x = 50,356,796,096.88/255,739.60
  6. Step 6: Final answer
    x = 196,906.53

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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.