Home / 397,445.78-548,469.82-216,153.80

Finding the Fourth Proportional to 397,445.78, 548,469.82 and 216,153.80

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Solution

The fourth proportional to 397,445.78, 548,469.82 and 216,153.80 is: 298,289.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,445.78 : 548,469.82 = 216,153.80 : x
  2. Step 2: Convert to fraction form
    397,445.78/548,469.82 = 216,153.80/x
  3. Step 3: Cross multiply
    397,445.78x = 548,469.82 × 216,153.80
  4. Step 4: Simplify right side
    397,445.78x = 118,553,835,778.32
  5. Step 5: Solve for x
    x = 118,553,835,778.32/397,445.78
  6. Step 6: Final answer
    x = 298,289.33

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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.