Home / 256,921,563.78-354,552,146.87-139,446,936.54

Finding the Fourth Proportional to 256,921,563.78, 354,552,146.87 and 139,446,936.54

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Solution

The fourth proportional to 256,921,563.78, 354,552,146.87 and 139,446,936.54 is: 192,436,983.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,921,563.78 : 354,552,146.87 = 139,446,936.54 : x
  2. Step 2: Convert to fraction form
    256,921,563.78/354,552,146.87 = 139,446,936.54/x
  3. Step 3: Cross multiply
    256,921,563.78x = 354,552,146.87 × 139,446,936.54
  4. Step 4: Simplify right side
    256,921,563.78x = 49,441,210,724,004,416
  5. Step 5: Solve for x
    x = 49,441,210,724,004,416/256,921,563.78
  6. Step 6: Final answer
    x = 192,436,983.48

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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.