Home / 256,519,800.71-353,987,841.22-139,042,608.68

Finding the Fourth Proportional to 256,519,800.71, 353,987,841.22 and 139,042,608.68

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Solution

The fourth proportional to 256,519,800.71, 353,987,841.22 and 139,042,608.68 is: 191,873,659.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,519,800.71 : 353,987,841.22 = 139,042,608.68 : x
  2. Step 2: Convert to fraction form
    256,519,800.71/353,987,841.22 = 139,042,608.68/x
  3. Step 3: Cross multiply
    256,519,800.71x = 353,987,841.22 × 139,042,608.68
  4. Step 4: Simplify right side
    256,519,800.71x = 49,219,392,884,230,440
  5. Step 5: Solve for x
    x = 49,219,392,884,230,440/256,519,800.71
  6. Step 6: Final answer
    x = 191,873,659.45

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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.