Finding the Fourth Proportional to 309,707,257.63, 427,407,290.97 and 168,571,655.19
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Solution
The fourth proportional to 309,707,257.63, 427,407,290.97 and 168,571,655.19 is: 232,635,021.31
Step by Step Solution
- Step 1: Write the proportion equation
309,707,257.63 : 427,407,290.97 = 168,571,655.19 : x - Step 2: Convert to fraction form
309,707,257.63/427,407,290.97 = 168,571,655.19/x - Step 3: Cross multiply
309,707,257.63x = 427,407,290.97 × 168,571,655.19 - Step 4: Simplify right side
309,707,257.63x = 72,048,754,479,086,848 - Step 5: Solve for x
x = 72,048,754,479,086,848/309,707,257.63 - Step 6: Final answer
x = 232,635,021.31
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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.