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Finding the Fourth Proportional to 489,581.76, 675,629.28 and 274,768.32

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Solution

The fourth proportional to 489,581.76, 675,629.28 and 274,768.32 is: 379,183.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,581.76 : 675,629.28 = 274,768.32 : x
  2. Step 2: Convert to fraction form
    489,581.76/675,629.28 = 274,768.32/x
  3. Step 3: Cross multiply
    489,581.76x = 675,629.28 × 274,768.32
  4. Step 4: Simplify right side
    489,581.76x = 185,641,522,208.41
  5. Step 5: Solve for x
    x = 185,641,522,208.41/489,581.76
  6. Step 6: Final answer
    x = 379,183.90

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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.