Finding the Fourth Proportional to 306,151,170.68, 422,660,540.67 and 212,201,849.72
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Solution
The fourth proportional to 306,151,170.68, 422,660,540.67 and 212,201,849.72 is: 292,957,718.68
Step by Step Solution
- Step 1: Write the proportion equation
306,151,170.68 : 422,660,540.67 = 212,201,849.72 : x - Step 2: Convert to fraction form
306,151,170.68/422,660,540.67 = 212,201,849.72/x - Step 3: Cross multiply
306,151,170.68x = 422,660,540.67 × 212,201,849.72 - Step 4: Simplify right side
306,151,170.68x = 89,689,348,534,090,176 - Step 5: Solve for x
x = 89,689,348,534,090,176/306,151,170.68 - Step 6: Final answer
x = 292,957,718.68
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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.