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Finding the Fourth Proportional to 394,038.40, 591,057.60 and 228,150.40

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Solution

The fourth proportional to 394,038.40, 591,057.60 and 228,150.40 is: 342,225.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,038.40 : 591,057.60 = 228,150.40 : x
  2. Step 2: Convert to fraction form
    394,038.40/591,057.60 = 228,150.40/x
  3. Step 3: Cross multiply
    394,038.40x = 591,057.60 × 228,150.40
  4. Step 4: Simplify right side
    394,038.40x = 134,850,027,863.04
  5. Step 5: Solve for x
    x = 134,850,027,863.04/394,038.40
  6. Step 6: Final answer
    x = 342,225.60

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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.