Home / 278,829.74-384,786.24-151,505.84

Finding the Fourth Proportional to 278,829.74, 384,786.24 and 151,505.84

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Solution

The fourth proportional to 278,829.74, 384,786.24 and 151,505.84 is: 209,078.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,829.74 : 384,786.24 = 151,505.84 : x
  2. Step 2: Convert to fraction form
    278,829.74/384,786.24 = 151,505.84/x
  3. Step 3: Cross multiply
    278,829.74x = 384,786.24 × 151,505.84
  4. Step 4: Simplify right side
    278,829.74x = 58,297,362,511.64
  5. Step 5: Solve for x
    x = 58,297,362,511.64/278,829.74
  6. Step 6: Final answer
    x = 209,078.71

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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.