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Finding the Fourth Proportional to 397,311.11, 548,282.87 and 216,027.60

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Solution

The fourth proportional to 397,311.11, 548,282.87 and 216,027.60 is: 298,114.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,311.11 : 548,282.87 = 216,027.60 : x
  2. Step 2: Convert to fraction form
    397,311.11/548,282.87 = 216,027.60/x
  3. Step 3: Cross multiply
    397,311.11x = 548,282.87 × 216,027.60
  4. Step 4: Simplify right side
    397,311.11x = 118,444,231,447.07
  5. Step 5: Solve for x
    x = 118,444,231,447.07/397,311.11
  6. Step 6: Final answer
    x = 298,114.58

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1.5x scale

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.