Finding the Fourth Proportional to 210,788,871, 290,919,192.12 and 121,463,436.84
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Solution
The fourth proportional to 210,788,871, 290,919,192.12 and 121,463,436.84 is: 167,637,146.83
Step by Step Solution
- Step 1: Write the proportion equation
210,788,871 : 290,919,192.12 = 121,463,436.84 : x - Step 2: Convert to fraction form
210,788,871/290,919,192.12 = 121,463,436.84/x - Step 3: Cross multiply
210,788,871x = 290,919,192.12 × 121,463,436.84 - Step 4: Simplify right side
210,788,871x = 35,336,044,917,611,448 - Step 5: Solve for x
x = 35,336,044,917,611,448/210,788,871 - Step 6: Final answer
x = 167,637,146.83
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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.