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Finding the Fourth Proportional to 319,383.56, 479,119.08 and 108,965

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Solution

The fourth proportional to 319,383.56, 479,119.08 and 108,965 is: 163,462.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,383.56 : 479,119.08 = 108,965 : x
  2. Step 2: Convert to fraction form
    319,383.56/479,119.08 = 108,965/x
  3. Step 3: Cross multiply
    319,383.56x = 479,119.08 × 108,965
  4. Step 4: Simplify right side
    319,383.56x = 52,207,210,552.20
  5. Step 5: Solve for x
    x = 52,207,210,552.20/319,383.56
  6. Step 6: Final answer
    x = 163,462.42

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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.