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Finding the Fourth Proportional to 256,993.58, 354,684.20 and 155,074.05

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Solution

The fourth proportional to 256,993.58, 354,684.20 and 155,074.05 is: 214,022.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,993.58 : 354,684.20 = 155,074.05 : x
  2. Step 2: Convert to fraction form
    256,993.58/354,684.20 = 155,074.05/x
  3. Step 3: Cross multiply
    256,993.58x = 354,684.20 × 155,074.05
  4. Step 4: Simplify right side
    256,993.58x = 55,002,314,589.64
  5. Step 5: Solve for x
    x = 55,002,314,589.64/256,993.58
  6. Step 6: Final answer
    x = 214,022.13

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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.