Home / 290,379,625,489.42-400,725,128,992.94-158,394,851,211.24

Finding the Fourth Proportional to 290,379,625,489.42, 400,725,128,992.94 and 158,394,851,211.24

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Solution

The fourth proportional to 290,379,625,489.42, 400,725,128,992.94 and 158,394,851,211.24 is: 218,585,574,233.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,379,625,489.42 : 400,725,128,992.94 = 158,394,851,211.24 : x
  2. Step 2: Convert to fraction form
    290,379,625,489.42/400,725,128,992.94 = 158,394,851,211.24/x
  3. Step 3: Cross multiply
    290,379,625,489.42x = 400,725,128,992.94 × 158,394,851,211.24
  4. Step 4: Simplify right side
    290,379,625,489.42x = 63,472,797,183,441,681,514,496
  5. Step 5: Solve for x
    x = 63,472,797,183,441,681,514,496/290,379,625,489.42
  6. Step 6: Final answer
    x = 218,585,574,233.94

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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.