Home / 256,965.42-354,621.96-143,788.98

Finding the Fourth Proportional to 256,965.42, 354,621.96 and 143,788.98

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Solution

The fourth proportional to 256,965.42, 354,621.96 and 143,788.98 is: 198,434.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,965.42 : 354,621.96 = 143,788.98 : x
  2. Step 2: Convert to fraction form
    256,965.42/354,621.96 = 143,788.98/x
  3. Step 3: Cross multiply
    256,965.42x = 354,621.96 × 143,788.98
  4. Step 4: Simplify right side
    256,965.42x = 50,990,729,914.00
  5. Step 5: Solve for x
    x = 50,990,729,914.00/256,965.42
  6. Step 6: Final answer
    x = 198,434.21

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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.