Finding the Fourth Proportional to 379,311.36, 568,988.94 and 142,656.09
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Solution
The fourth proportional to 379,311.36, 568,988.94 and 142,656.09 is: 213,992.37
Step by Step Solution
- Step 1: Write the proportion equation
379,311.36 : 568,988.94 = 142,656.09 : x - Step 2: Convert to fraction form
379,311.36/568,988.94 = 142,656.09/x - Step 3: Cross multiply
379,311.36x = 568,988.94 × 142,656.09 - Step 4: Simplify right side
379,311.36x = 81,169,737,433.64 - Step 5: Solve for x
x = 81,169,737,433.64/379,311.36 - Step 6: Final answer
x = 213,992.37
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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.