Home / 256,876.12-354,505.44-143,699.68

Finding the Fourth Proportional to 256,876.12, 354,505.44 and 143,699.68

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Solution

The fourth proportional to 256,876.12, 354,505.44 and 143,699.68 is: 198,314.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,876.12 : 354,505.44 = 143,699.68 : x
  2. Step 2: Convert to fraction form
    256,876.12/354,505.44 = 143,699.68/x
  3. Step 3: Cross multiply
    256,876.12x = 354,505.44 × 143,699.68
  4. Step 4: Simplify right side
    256,876.12x = 50,942,318,286.26
  5. Step 5: Solve for x
    x = 50,942,318,286.26/256,876.12
  6. Step 6: Final answer
    x = 198,314.73

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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.