Home / 279,659,442.51-419,367,356.40-80,194,653.57

Finding the Fourth Proportional to 279,659,442.51, 419,367,356.40 and 80,194,653.57

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Solution

The fourth proportional to 279,659,442.51, 419,367,356.40 and 80,194,653.57 is: 120,257,051.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,659,442.51 : 419,367,356.40 = 80,194,653.57 : x
  2. Step 2: Convert to fraction form
    279,659,442.51/419,367,356.40 = 80,194,653.57/x
  3. Step 3: Cross multiply
    279,659,442.51x = 419,367,356.40 × 80,194,653.57
  4. Step 4: Simplify right side
    279,659,442.51x = 33,631,019,865,064,716
  5. Step 5: Solve for x
    x = 33,631,019,865,064,716/279,659,442.51
  6. Step 6: Final answer
    x = 120,257,051.09

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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.