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Finding the Fourth Proportional to 489,233.90, 675,147.68 and 274,369.36

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Solution

The fourth proportional to 489,233.90, 675,147.68 and 274,369.36 is: 378,632.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,233.90 : 675,147.68 = 274,369.36 : x
  2. Step 2: Convert to fraction form
    489,233.90/675,147.68 = 274,369.36/x
  3. Step 3: Cross multiply
    489,233.90x = 675,147.68 × 274,369.36
  4. Step 4: Simplify right side
    489,233.90x = 185,239,836,867.09
  5. Step 5: Solve for x
    x = 185,239,836,867.09/489,233.90
  6. Step 6: Final answer
    x = 378,632.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.