Home / 256,909,662.28-354,535,676.22-139,434,992.56

Finding the Fourth Proportional to 256,909,662.28, 354,535,676.22 and 139,434,992.56

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Solution

The fourth proportional to 256,909,662.28, 354,535,676.22 and 139,434,992.56 is: 192,420,475.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,909,662.28 : 354,535,676.22 = 139,434,992.56 : x
  2. Step 2: Convert to fraction form
    256,909,662.28/354,535,676.22 = 139,434,992.56/x
  3. Step 3: Cross multiply
    256,909,662.28x = 354,535,676.22 × 139,434,992.56
  4. Step 4: Simplify right side
    256,909,662.28x = 49,434,679,375,990,272
  5. Step 5: Solve for x
    x = 49,434,679,375,990,272/256,909,662.28
  6. Step 6: Final answer
    x = 192,420,475.50

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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.