Finding the Fourth Proportional to 209,124,322.09, 288,589,971.78 and 115,036,448.20
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Solution
The fourth proportional to 209,124,322.09, 288,589,971.78 and 115,036,448.20 is: 158,749,422.39
Step by Step Solution
- Step 1: Write the proportion equation
209,124,322.09 : 288,589,971.78 = 115,036,448.20 : x - Step 2: Convert to fraction form
209,124,322.09/288,589,971.78 = 115,036,448.20/x - Step 3: Cross multiply
209,124,322.09x = 288,589,971.78 × 115,036,448.20 - Step 4: Simplify right side
209,124,322.09x = 33,198,365,339,709,428 - Step 5: Solve for x
x = 33,198,365,339,709,428/209,124,322.09 - Step 6: Final answer
x = 158,749,422.39
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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.