Finding the Fourth Proportional to 373,497,138.38, 515,469,767.98 and 310,662,379.36
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Solution
The fourth proportional to 373,497,138.38, 515,469,767.98 and 310,662,379.36 is: 428,750,445.86
Step by Step Solution
- Step 1: Write the proportion equation
373,497,138.38 : 515,469,767.98 = 310,662,379.36 : x - Step 2: Convert to fraction form
373,497,138.38/515,469,767.98 = 310,662,379.36/x - Step 3: Cross multiply
373,497,138.38x = 515,469,767.98 × 310,662,379.36 - Step 4: Simplify right side
373,497,138.38x = 160,137,064,608,813,952 - Step 5: Solve for x
x = 160,137,064,608,813,952/373,497,138.38 - Step 6: Final answer
x = 428,750,445.86
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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.