Home / 256,519,805.76-353,987,848.20-139,042,613.70

Finding the Fourth Proportional to 256,519,805.76, 353,987,848.20 and 139,042,613.70

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Solution

The fourth proportional to 256,519,805.76, 353,987,848.20 and 139,042,613.70 is: 191,873,666.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,519,805.76 : 353,987,848.20 = 139,042,613.70 : x
  2. Step 2: Convert to fraction form
    256,519,805.76/353,987,848.20 = 139,042,613.70/x
  3. Step 3: Cross multiply
    256,519,805.76x = 353,987,848.20 × 139,042,613.70
  4. Step 4: Simplify right side
    256,519,805.76x = 49,219,395,631,766,832
  5. Step 5: Solve for x
    x = 49,219,395,631,766,832/256,519,805.76
  6. Step 6: Final answer
    x = 191,873,666.39

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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.