Home / 290,379,625,490.47-400,725,128,994.43-158,394,851,212.30

Finding the Fourth Proportional to 290,379,625,490.47, 400,725,128,994.43 and 158,394,851,212.30

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Solution

The fourth proportional to 290,379,625,490.47, 400,725,128,994.43 and 158,394,851,212.30 is: 218,585,574,235.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,379,625,490.47 : 400,725,128,994.43 = 158,394,851,212.30 : x
  2. Step 2: Convert to fraction form
    290,379,625,490.47/400,725,128,994.43 = 158,394,851,212.30/x
  3. Step 3: Cross multiply
    290,379,625,490.47x = 400,725,128,994.43 × 158,394,851,212.30
  4. Step 4: Simplify right side
    290,379,625,490.47x = 63,472,797,184,102,460,555,264
  5. Step 5: Solve for x
    x = 63,472,797,184,102,460,555,264/290,379,625,490.47
  6. Step 6: Final answer
    x = 218,585,574,235.43

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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.