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Finding the Fourth Proportional to 397,372.02, 548,379.90 and 216,087.54

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Solution

The fourth proportional to 397,372.02, 548,379.90 and 216,087.54 is: 298,204.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,372.02 : 548,379.90 = 216,087.54 : x
  2. Step 2: Convert to fraction form
    397,372.02/548,379.90 = 216,087.54/x
  3. Step 3: Cross multiply
    397,372.02x = 548,379.90 × 216,087.54
  4. Step 4: Simplify right side
    397,372.02x = 118,498,063,576.45
  5. Step 5: Solve for x
    x = 118,498,063,576.45/397,372.02
  6. Step 6: Final answer
    x = 298,204.35

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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.