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Finding the Fourth Proportional to 275,015.70, 412,912.35 and 170,039.70

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Solution

The fourth proportional to 275,015.70, 412,912.35 and 170,039.70 is: 255,299.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,015.70 : 412,912.35 = 170,039.70 : x
  2. Step 2: Convert to fraction form
    275,015.70/412,912.35 = 170,039.70/x
  3. Step 3: Cross multiply
    275,015.70x = 412,912.35 × 170,039.70
  4. Step 4: Simplify right side
    275,015.70x = 70,211,492,120.30
  5. Step 5: Solve for x
    x = 70,211,492,120.30/275,015.70
  6. Step 6: Final answer
    x = 255,299.94

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1.5x scale

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.