Home / 256,519,830.61-353,987,882.35-139,042,638.51

Finding the Fourth Proportional to 256,519,830.61, 353,987,882.35 and 139,042,638.51

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Solution

The fourth proportional to 256,519,830.61, 353,987,882.35 and 139,042,638.51 is: 191,873,700.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,519,830.61 : 353,987,882.35 = 139,042,638.51 : x
  2. Step 2: Convert to fraction form
    256,519,830.61/353,987,882.35 = 139,042,638.51/x
  3. Step 3: Cross multiply
    256,519,830.61x = 353,987,882.35 × 139,042,638.51
  4. Step 4: Simplify right side
    256,519,830.61x = 49,219,409,162,511,456
  5. Step 5: Solve for x
    x = 49,219,409,162,511,456/256,519,830.61
  6. Step 6: Final answer
    x = 191,873,700.55

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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.