Home / 290,379,625,491.97-400,725,128,996.51-158,394,851,213.80

Finding the Fourth Proportional to 290,379,625,491.97, 400,725,128,996.51 and 158,394,851,213.80

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Solution

The fourth proportional to 290,379,625,491.97, 400,725,128,996.51 and 158,394,851,213.80 is: 218,585,574,237.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,379,625,491.97 : 400,725,128,996.51 = 158,394,851,213.80 : x
  2. Step 2: Convert to fraction form
    290,379,625,491.97/400,725,128,996.51 = 158,394,851,213.80/x
  3. Step 3: Cross multiply
    290,379,625,491.97x = 400,725,128,996.51 × 158,394,851,213.80
  4. Step 4: Simplify right side
    290,379,625,491.97x = 63,472,797,185,033,008,840,704
  5. Step 5: Solve for x
    x = 63,472,797,185,033,008,840,704/290,379,625,491.97
  6. Step 6: Final answer
    x = 218,585,574,237.50

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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.