Home / 256,408,657.71-353,845,179.44-138,933,956.81

Finding the Fourth Proportional to 256,408,657.71, 353,845,179.44 and 138,933,956.81

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Solution

The fourth proportional to 256,408,657.71, 353,845,179.44 and 138,933,956.81 is: 191,729,527.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,408,657.71 : 353,845,179.44 = 138,933,956.81 : x
  2. Step 2: Convert to fraction form
    256,408,657.71/353,845,179.44 = 138,933,956.81/x
  3. Step 3: Cross multiply
    256,408,657.71x = 353,845,179.44 × 138,933,956.81
  4. Step 4: Simplify right side
    256,408,657.71x = 49,161,110,875,279,768
  5. Step 5: Solve for x
    x = 49,161,110,875,279,768/256,408,657.71
  6. Step 6: Final answer
    x = 191,729,527.83

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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.