Home / 278,945.86-384,942.99-151,621.06

Finding the Fourth Proportional to 278,945.86, 384,942.99 and 151,621.06

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Solution

The fourth proportional to 278,945.86, 384,942.99 and 151,621.06 is: 209,235.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,945.86 : 384,942.99 = 151,621.06 : x
  2. Step 2: Convert to fraction form
    278,945.86/384,942.99 = 151,621.06/x
  3. Step 3: Cross multiply
    278,945.86x = 384,942.99 × 151,621.06
  4. Step 4: Simplify right side
    278,945.86x = 58,365,464,183.37
  5. Step 5: Solve for x
    x = 58,365,464,183.37/278,945.86
  6. Step 6: Final answer
    x = 209,235.81

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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.