Finding the Third Proportional to 128,169,324 and 198,586,971
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Solution
The third proportional to 128,169,324 and 198,586,971 is: 307,692,853.64
Step by Step Solution
- Step 1: Write the proportion equation
128,169,324 : 198,586,971 = 198,586,971 : x - Step 2: Convert to fraction form
128,169,324/198,586,971 = 198,586,971/x - Step 3: Cross multiply
128,169,324x = 198,586,971 × 198,586,971 - Step 4: Simplify right side
128,169,324x = 39,436,785,050,954,840 - Step 5: Solve for x
x = 39,436,785,050,954,840/128,169,324 - Step 6: Final answer
x = 307,692,853.64
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These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.