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Finding the Fourth Proportional to 275,015.20, 412,911.60 and 170,039.20

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Solution

The fourth proportional to 275,015.20, 412,911.60 and 170,039.20 is: 255,299.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,015.20 : 412,911.60 = 170,039.20 : x
  2. Step 2: Convert to fraction form
    275,015.20/412,911.60 = 170,039.20/x
  3. Step 3: Cross multiply
    275,015.20x = 412,911.60 × 170,039.20
  4. Step 4: Simplify right side
    275,015.20x = 70,211,158,134.72
  5. Step 5: Solve for x
    x = 70,211,158,134.72/275,015.20
  6. Step 6: Final answer
    x = 255,299.19

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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.