Finding the Third Proportional to 128,169,526 and 198,587,274
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Solution
The third proportional to 128,169,526 and 198,587,274 is: 307,693,307.65
Step by Step Solution
- Step 1: Write the proportion equation
128,169,526 : 198,587,274 = 198,587,274 : x - Step 2: Convert to fraction form
128,169,526/198,587,274 = 198,587,274/x - Step 3: Cross multiply
128,169,526x = 198,587,274 × 198,587,274 - Step 4: Simplify right side
128,169,526x = 39,436,905,394,751,072 - Step 5: Solve for x
x = 39,436,905,394,751,072/128,169,526 - Step 6: Final answer
x = 307,693,307.65
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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.