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Finding the Fourth Proportional to 319,654.36, 479,564.58 and 262,821.94

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Solution

The fourth proportional to 319,654.36, 479,564.58 and 262,821.94 is: 394,301.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,654.36 : 479,564.58 = 262,821.94 : x
  2. Step 2: Convert to fraction form
    319,654.36/479,564.58 = 262,821.94/x
  3. Step 3: Cross multiply
    319,654.36x = 479,564.58 × 262,821.94
  4. Step 4: Simplify right side
    319,654.36x = 126,040,093,270.89
  5. Step 5: Solve for x
    x = 126,040,093,270.89/319,654.36
  6. Step 6: Final answer
    x = 394,301.19

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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.