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Finding the Fourth Proportional to 492,433.21, 738,435.27 and 261,571.67

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Solution

The fourth proportional to 492,433.21, 738,435.27 and 261,571.67 is: 392,243.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,433.21 : 738,435.27 = 261,571.67 : x
  2. Step 2: Convert to fraction form
    492,433.21/738,435.27 = 261,571.67/x
  3. Step 3: Cross multiply
    492,433.21x = 738,435.27 × 261,571.67
  4. Step 4: Simplify right side
    492,433.21x = 193,153,743,068.63
  5. Step 5: Solve for x
    x = 193,153,743,068.63/492,433.21
  6. Step 6: Final answer
    x = 392,243.54

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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.