Finding the Fourth Proportional to 261,186,333.41, 391,951,881.44 and 138,450,841.49
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Solution
The fourth proportional to 261,186,333.41, 391,951,881.44 and 138,450,841.49 is: 207,767,638.91
Step by Step Solution
- Step 1: Write the proportion equation
261,186,333.41 : 391,951,881.44 = 138,450,841.49 : x - Step 2: Convert to fraction form
261,186,333.41/391,951,881.44 = 138,450,841.49/x - Step 3: Cross multiply
261,186,333.41x = 391,951,881.44 × 138,450,841.49 - Step 4: Simplify right side
261,186,333.41x = 54,266,067,806,304,704 - Step 5: Solve for x
x = 54,266,067,806,304,704/261,186,333.41 - Step 6: Final answer
x = 207,767,638.91
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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.