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Finding the Fourth Proportional to 397,429.56, 548,447.49 and 216,137.57

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Solution

The fourth proportional to 397,429.56, 548,447.49 and 216,137.57 is: 298,266.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,429.56 : 548,447.49 = 216,137.57 : x
  2. Step 2: Convert to fraction form
    397,429.56/548,447.49 = 216,137.57/x
  3. Step 3: Cross multiply
    397,429.56x = 548,447.49 × 216,137.57
  4. Step 4: Simplify right side
    397,429.56x = 118,540,105,018.96
  5. Step 5: Solve for x
    x = 118,540,105,018.96/397,429.56
  6. Step 6: Final answer
    x = 298,266.96

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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.