Home / 256,557.09-354,049.32-143,379.84

Finding the Fourth Proportional to 256,557.09, 354,049.32 and 143,379.84

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Solution

The fourth proportional to 256,557.09, 354,049.32 and 143,379.84 is: 197,864.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,557.09 : 354,049.32 = 143,379.84 : x
  2. Step 2: Convert to fraction form
    256,557.09/354,049.32 = 143,379.84/x
  3. Step 3: Cross multiply
    256,557.09x = 354,049.32 × 143,379.84
  4. Step 4: Simplify right side
    256,557.09x = 50,763,534,853.71
  5. Step 5: Solve for x
    x = 50,763,534,853.71/256,557.09
  6. Step 6: Final answer
    x = 197,864.48

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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.