Home / 256,550.09-354,039.66-143,372.84

Finding the Fourth Proportional to 256,550.09, 354,039.66 and 143,372.84

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Solution

The fourth proportional to 256,550.09, 354,039.66 and 143,372.84 is: 197,854.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,550.09 : 354,039.66 = 143,372.84 : x
  2. Step 2: Convert to fraction form
    256,550.09/354,039.66 = 143,372.84/x
  3. Step 3: Cross multiply
    256,550.09x = 354,039.66 × 143,372.84
  4. Step 4: Simplify right side
    256,550.09x = 50,759,669,756.64
  5. Step 5: Solve for x
    x = 50,759,669,756.64/256,550.09
  6. Step 6: Final answer
    x = 197,854.82

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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.