Home / 287,019,003.72-396,208,657.52-192,987,653.84

Finding the Fourth Proportional to 287,019,003.72, 396,208,657.52 and 192,987,653.84

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Solution

The fourth proportional to 287,019,003.72, 396,208,657.52 and 192,987,653.84 is: 266,405,284.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,019,003.72 : 396,208,657.52 = 192,987,653.84 : x
  2. Step 2: Convert to fraction form
    287,019,003.72/396,208,657.52 = 192,987,653.84/x
  3. Step 3: Cross multiply
    287,019,003.72x = 396,208,657.52 × 192,987,653.84
  4. Step 4: Simplify right side
    287,019,003.72x = 76,463,379,245,880,864
  5. Step 5: Solve for x
    x = 76,463,379,245,880,864/287,019,003.72
  6. Step 6: Final answer
    x = 266,405,284.16

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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.