Home / 280,372.41-386,906.49-257,802.57

Finding the Fourth Proportional to 280,372.41, 386,906.49 and 257,802.57

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Solution

The fourth proportional to 280,372.41, 386,906.49 and 257,802.57 is: 355,760.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,372.41 : 386,906.49 = 257,802.57 : x
  2. Step 2: Convert to fraction form
    280,372.41/386,906.49 = 257,802.57/x
  3. Step 3: Cross multiply
    280,372.41x = 386,906.49 × 257,802.57
  4. Step 4: Simplify right side
    280,372.41x = 99,745,487,471.68
  5. Step 5: Solve for x
    x = 99,745,487,471.68/280,372.41
  6. Step 6: Final answer
    x = 355,760.71

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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.