Home / 256,638.03-354,168.32-143,465.55

Finding the Fourth Proportional to 256,638.03, 354,168.32 and 143,465.55

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Solution

The fourth proportional to 256,638.03, 354,168.32 and 143,465.55 is: 197,986.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,638.03 : 354,168.32 = 143,465.55 : x
  2. Step 2: Convert to fraction form
    256,638.03/354,168.32 = 143,465.55/x
  3. Step 3: Cross multiply
    256,638.03x = 354,168.32 × 143,465.55
  4. Step 4: Simplify right side
    256,638.03x = 50,810,952,104.05
  5. Step 5: Solve for x
    x = 50,810,952,104.05/256,638.03
  6. Step 6: Final answer
    x = 197,986.84

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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.