Home / 256,408,659.46-353,845,181.85-138,933,958.56

Finding the Fourth Proportional to 256,408,659.46, 353,845,181.85 and 138,933,958.56

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Solution

The fourth proportional to 256,408,659.46, 353,845,181.85 and 138,933,958.56 is: 191,729,530.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,408,659.46 : 353,845,181.85 = 138,933,958.56 : x
  2. Step 2: Convert to fraction form
    256,408,659.46/353,845,181.85 = 138,933,958.56/x
  3. Step 3: Cross multiply
    256,408,659.46x = 353,845,181.85 × 138,933,958.56
  4. Step 4: Simplify right side
    256,408,659.46x = 49,161,111,831,803,568
  5. Step 5: Solve for x
    x = 49,161,111,831,803,568/256,408,659.46
  6. Step 6: Final answer
    x = 191,729,530.26

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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.