Finding the Fourth Proportional to 319,421,013.80, 440,802,327.36 and 172,743,297.80
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Solution
The fourth proportional to 319,421,013.80, 440,802,327.36 and 172,743,297.80 is: 238,386,469.32
Step by Step Solution
- Step 1: Write the proportion equation
319,421,013.80 : 440,802,327.36 = 172,743,297.80 : x - Step 2: Convert to fraction form
319,421,013.80/440,802,327.36 = 172,743,297.80/x - Step 3: Cross multiply
319,421,013.80x = 440,802,327.36 × 172,743,297.80 - Step 4: Simplify right side
319,421,013.80x = 76,145,647,706,081,568 - Step 5: Solve for x
x = 76,145,647,706,081,568/319,421,013.80 - Step 6: Final answer
x = 238,386,469.32
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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.