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Finding the Fourth Proportional to 264,868.80, 397,303.20 and 212,380.80

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Solution

The fourth proportional to 264,868.80, 397,303.20 and 212,380.80 is: 318,571.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,868.80 : 397,303.20 = 212,380.80 : x
  2. Step 2: Convert to fraction form
    264,868.80/397,303.20 = 212,380.80/x
  3. Step 3: Cross multiply
    264,868.80x = 397,303.20 × 212,380.80
  4. Step 4: Simplify right side
    264,868.80x = 84,379,571,458.56
  5. Step 5: Solve for x
    x = 84,379,571,458.56/264,868.80
  6. Step 6: Final answer
    x = 318,571.20

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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.