Home / 397,265.45-548,236.89-215,989.61

Finding the Fourth Proportional to 397,265.45, 548,236.89 and 215,989.61

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Solution

The fourth proportional to 397,265.45, 548,236.89 and 215,989.61 is: 298,071.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,265.45 : 548,236.89 = 215,989.61 : x
  2. Step 2: Convert to fraction form
    397,265.45/548,236.89 = 215,989.61/x
  3. Step 3: Cross multiply
    397,265.45x = 548,236.89 × 215,989.61
  4. Step 4: Simplify right side
    397,265.45x = 118,413,469,317.53
  5. Step 5: Solve for x
    x = 118,413,469,317.53/397,265.45
  6. Step 6: Final answer
    x = 298,071.40

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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.