Home / 256,821.87-354,394.94-143,622.75

Finding the Fourth Proportional to 256,821.87, 354,394.94 and 143,622.75

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Solution

The fourth proportional to 256,821.87, 354,394.94 and 143,622.75 is: 198,188.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,821.87 : 354,394.94 = 143,622.75 : x
  2. Step 2: Convert to fraction form
    256,821.87/354,394.94 = 143,622.75/x
  3. Step 3: Cross multiply
    256,821.87x = 354,394.94 × 143,622.75
  4. Step 4: Simplify right side
    256,821.87x = 50,899,175,150.77
  5. Step 5: Solve for x
    x = 50,899,175,150.77/256,821.87
  6. Step 6: Final answer
    x = 198,188.63

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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.