Home / 280,146.92-386,727.98-189,777.33

Finding the Fourth Proportional to 280,146.92, 386,727.98 and 189,777.33

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Solution

The fourth proportional to 280,146.92, 386,727.98 and 189,777.33 is: 261,977.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,146.92 : 386,727.98 = 189,777.33 : x
  2. Step 2: Convert to fraction form
    280,146.92/386,727.98 = 189,777.33/x
  3. Step 3: Cross multiply
    280,146.92x = 386,727.98 × 189,777.33
  4. Step 4: Simplify right side
    280,146.92x = 73,392,202,531.81
  5. Step 5: Solve for x
    x = 73,392,202,531.81/280,146.92
  6. Step 6: Final answer
    x = 261,977.55

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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.