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Finding the Fourth Proportional to 319,728.60, 479,811.60 and 177,573.60

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Solution

The fourth proportional to 319,728.60, 479,811.60 and 177,573.60 is: 266,481.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,728.60 : 479,811.60 = 177,573.60 : x
  2. Step 2: Convert to fraction form
    319,728.60/479,811.60 = 177,573.60/x
  3. Step 3: Cross multiply
    319,728.60x = 479,811.60 × 177,573.60
  4. Step 4: Simplify right side
    319,728.60x = 85,201,873,133.76
  5. Step 5: Solve for x
    x = 85,201,873,133.76/319,728.60
  6. Step 6: Final answer
    x = 266,481.86

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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.