Finding the Third Proportional to 128,312,858.81 and 263,427,972.19
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Solution
The third proportional to 128,312,858.81 and 263,427,972.19 is: 540,821,061.69
Step by Step Solution
- Step 1: Write the proportion equation
128,312,858.81 : 263,427,972.19 = 263,427,972.19 : x - Step 2: Convert to fraction form
128,312,858.81/263,427,972.19 = 263,427,972.19/x - Step 3: Cross multiply
128,312,858.81x = 263,427,972.19 × 263,427,972.19 - Step 4: Simplify right side
128,312,858.81x = 69,394,296,530,818,272 - Step 5: Solve for x
x = 69,394,296,530,818,272/128,312,858.81 - Step 6: Final answer
x = 540,821,061.69
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Why These Related Problems?
These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.