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Finding the Fourth Proportional to 319,359.05, 479,019.77 and 119,662.72

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Solution

The fourth proportional to 319,359.05, 479,019.77 and 119,662.72 is: 179,487.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,359.05 : 479,019.77 = 119,662.72 : x
  2. Step 2: Convert to fraction form
    319,359.05/479,019.77 = 119,662.72/x
  3. Step 3: Cross multiply
    319,359.05x = 479,019.77 × 119,662.72
  4. Step 4: Simplify right side
    319,359.05x = 57,320,807,264.85
  5. Step 5: Solve for x
    x = 57,320,807,264.85/319,359.05
  6. Step 6: Final answer
    x = 179,487.03

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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.