Home / 256,519,799.78-353,987,839.94-139,042,607.74

Finding the Fourth Proportional to 256,519,799.78, 353,987,839.94 and 139,042,607.74

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Solution

The fourth proportional to 256,519,799.78, 353,987,839.94 and 139,042,607.74 is: 191,873,658.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,519,799.78 : 353,987,839.94 = 139,042,607.74 : x
  2. Step 2: Convert to fraction form
    256,519,799.78/353,987,839.94 = 139,042,607.74/x
  3. Step 3: Cross multiply
    256,519,799.78x = 353,987,839.94 × 139,042,607.74
  4. Step 4: Simplify right side
    256,519,799.78x = 49,219,392,373,507,328
  5. Step 5: Solve for x
    x = 49,219,392,373,507,328/256,519,799.78
  6. Step 6: Final answer
    x = 191,873,658.16

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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.