Home / 256,192.78-353,545.68-143,015.54

Finding the Fourth Proportional to 256,192.78, 353,545.68 and 143,015.54

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Solution

The fourth proportional to 256,192.78, 353,545.68 and 143,015.54 is: 197,361.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,192.78 : 353,545.68 = 143,015.54 : x
  2. Step 2: Convert to fraction form
    256,192.78/353,545.68 = 143,015.54/x
  3. Step 3: Cross multiply
    256,192.78x = 353,545.68 × 143,015.54
  4. Step 4: Simplify right side
    256,192.78x = 50,562,526,339.87
  5. Step 5: Solve for x
    x = 50,562,526,339.87/256,192.78
  6. Step 6: Final answer
    x = 197,361.25

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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.