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Finding the Fourth Proportional to 319,728.87, 479,601 and 151,327.71

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Solution

The fourth proportional to 319,728.87, 479,601 and 151,327.71 is: 226,995.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,728.87 : 479,601 = 151,327.71 : x
  2. Step 2: Convert to fraction form
    319,728.87/479,601 = 151,327.71/x
  3. Step 3: Cross multiply
    319,728.87x = 479,601 × 151,327.71
  4. Step 4: Simplify right side
    319,728.87x = 72,576,921,043.71
  5. Step 5: Solve for x
    x = 72,576,921,043.71/319,728.87
  6. Step 6: Final answer
    x = 226,995.21

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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.