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Finding the Fourth Proportional to 394,492.40, 591,738.60 and 274,223.60

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Solution

The fourth proportional to 394,492.40, 591,738.60 and 274,223.60 is: 411,335.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,492.40 : 591,738.60 = 274,223.60 : x
  2. Step 2: Convert to fraction form
    394,492.40/591,738.60 = 274,223.60/x
  3. Step 3: Cross multiply
    394,492.40x = 591,738.60 × 274,223.60
  4. Step 4: Simplify right side
    394,492.40x = 162,268,689,150.96
  5. Step 5: Solve for x
    x = 162,268,689,150.96/394,492.40
  6. Step 6: Final answer
    x = 411,335.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.