Home / 256,821.20-354,414.45-143,643.95

Finding the Fourth Proportional to 256,821.20, 354,414.45 and 143,643.95

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Solution

The fourth proportional to 256,821.20, 354,414.45 and 143,643.95 is: 198,229.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,821.20 : 354,414.45 = 143,643.95 : x
  2. Step 2: Convert to fraction form
    256,821.20/354,414.45 = 143,643.95/x
  3. Step 3: Cross multiply
    256,821.20x = 354,414.45 × 143,643.95
  4. Step 4: Simplify right side
    256,821.20x = 50,909,489,763.01
  5. Step 5: Solve for x
    x = 50,909,489,763.01/256,821.20
  6. Step 6: Final answer
    x = 198,229.32

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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.