Home / 256,519,799.21-353,987,839.16-139,042,607.18

Finding the Fourth Proportional to 256,519,799.21, 353,987,839.16 and 139,042,607.18

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Solution

The fourth proportional to 256,519,799.21, 353,987,839.16 and 139,042,607.18 is: 191,873,657.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,519,799.21 : 353,987,839.16 = 139,042,607.18 : x
  2. Step 2: Convert to fraction form
    256,519,799.21/353,987,839.16 = 139,042,607.18/x
  3. Step 3: Cross multiply
    256,519,799.21x = 353,987,839.16 × 139,042,607.18
  4. Step 4: Simplify right side
    256,519,799.21x = 49,219,392,066,125,688
  5. Step 5: Solve for x
    x = 49,219,392,066,125,688/256,519,799.21
  6. Step 6: Final answer
    x = 191,873,657.39

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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.