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Finding the Fourth Proportional to 319,796.87, 479,945.99 and 223,105.28

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Solution

The fourth proportional to 319,796.87, 479,945.99 and 223,105.28 is: 334,832.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,796.87 : 479,945.99 = 223,105.28 : x
  2. Step 2: Convert to fraction form
    319,796.87/479,945.99 = 223,105.28/x
  3. Step 3: Cross multiply
    319,796.87x = 479,945.99 × 223,105.28
  4. Step 4: Simplify right side
    319,796.87x = 107,078,484,568.17
  5. Step 5: Solve for x
    x = 107,078,484,568.17/319,796.87
  6. Step 6: Final answer
    x = 334,832.82

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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.