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Finding the Fourth Proportional to 397,452, 548,485.20 and 216,163.92

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Solution

The fourth proportional to 397,452, 548,485.20 and 216,163.92 is: 298,306.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,452 : 548,485.20 = 216,163.92 : x
  2. Step 2: Convert to fraction form
    397,452/548,485.20 = 216,163.92/x
  3. Step 3: Cross multiply
    397,452x = 548,485.20 × 216,163.92
  4. Step 4: Simplify right side
    397,452x = 118,562,710,893.98
  5. Step 5: Solve for x
    x = 118,562,710,893.98/397,452
  6. Step 6: Final answer
    x = 298,306.99

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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.