Home / 256,914,738.54-354,542,671.20-139,440,055.44

Finding the Fourth Proportional to 256,914,738.54, 354,542,671.20 and 139,440,055.44

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Solution

The fourth proportional to 256,914,738.54, 354,542,671.20 and 139,440,055.44 is: 192,427,456.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,914,738.54 : 354,542,671.20 = 139,440,055.44 : x
  2. Step 2: Convert to fraction form
    256,914,738.54/354,542,671.20 = 139,440,055.44/x
  3. Step 3: Cross multiply
    256,914,738.54x = 354,542,671.20 × 139,440,055.44
  4. Step 4: Simplify right side
    256,914,738.54x = 49,437,449,727,973,688
  5. Step 5: Solve for x
    x = 49,437,449,727,973,688/256,914,738.54
  6. Step 6: Final answer
    x = 192,427,456.71

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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.