Home / 212,944,620.80-319,558,648.80-120,828,180.80

Finding the Fourth Proportional to 212,944,620.80, 319,558,648.80 and 120,828,180.80

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Solution

The fourth proportional to 212,944,620.80, 319,558,648.80 and 120,828,180.80 is: 181,322,684.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,944,620.80 : 319,558,648.80 = 120,828,180.80 : x
  2. Step 2: Convert to fraction form
    212,944,620.80/319,558,648.80 = 120,828,180.80/x
  3. Step 3: Cross multiply
    212,944,620.80x = 319,558,648.80 × 120,828,180.80
  4. Step 4: Simplify right side
    212,944,620.80x = 38,611,690,193,410,104
  5. Step 5: Solve for x
    x = 38,611,690,193,410,104/212,944,620.80
  6. Step 6: Final answer
    x = 181,322,684.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.