Home / 256,519,798.45-353,987,838.13-139,042,606.43

Finding the Fourth Proportional to 256,519,798.45, 353,987,838.13 and 139,042,606.43

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Solution

The fourth proportional to 256,519,798.45, 353,987,838.13 and 139,042,606.43 is: 191,873,656.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,519,798.45 : 353,987,838.13 = 139,042,606.43 : x
  2. Step 2: Convert to fraction form
    256,519,798.45/353,987,838.13 = 139,042,606.43/x
  3. Step 3: Cross multiply
    256,519,798.45x = 353,987,838.13 × 139,042,606.43
  4. Step 4: Simplify right side
    256,519,798.45x = 49,219,391,658,116,136
  5. Step 5: Solve for x
    x = 49,219,391,658,116,136/256,519,798.45
  6. Step 6: Final answer
    x = 191,873,656.36

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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.