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Finding the Fourth Proportional to 319,803.36, 479,661.32 and 95,198.48

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Solution

The fourth proportional to 319,803.36, 479,661.32 and 95,198.48 is: 142,784.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,803.36 : 479,661.32 = 95,198.48 : x
  2. Step 2: Convert to fraction form
    319,803.36/479,661.32 = 95,198.48/x
  3. Step 3: Cross multiply
    319,803.36x = 479,661.32 × 95,198.48
  4. Step 4: Simplify right side
    319,803.36x = 45,663,028,578.79
  5. Step 5: Solve for x
    x = 45,663,028,578.79/319,803.36
  6. Step 6: Final answer
    x = 142,784.71

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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.