Home / 278,091.63-383,643.81-187,414.56

Finding the Fourth Proportional to 278,091.63, 383,643.81 and 187,414.56

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Solution

The fourth proportional to 278,091.63, 383,643.81 and 187,414.56 is: 258,549.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,091.63 : 383,643.81 = 187,414.56 : x
  2. Step 2: Convert to fraction form
    278,091.63/383,643.81 = 187,414.56/x
  3. Step 3: Cross multiply
    278,091.63x = 383,643.81 × 187,414.56
  4. Step 4: Simplify right side
    278,091.63x = 71,900,435,847.87
  5. Step 5: Solve for x
    x = 71,900,435,847.87/278,091.63
  6. Step 6: Final answer
    x = 258,549.44

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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.