Finding the Fourth Proportional to 208,108,326.15, 287,207,126.10 and 115,317,940.23
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Solution
The fourth proportional to 208,108,326.15, 287,207,126.10 and 115,317,940.23 is: 159,148,530.07
Step by Step Solution
- Step 1: Write the proportion equation
208,108,326.15 : 287,207,126.10 = 115,317,940.23 : x - Step 2: Convert to fraction form
208,108,326.15/287,207,126.10 = 115,317,940.23/x - Step 3: Cross multiply
208,108,326.15x = 287,207,126.10 × 115,317,940.23 - Step 4: Simplify right side
208,108,326.15x = 33,120,134,201,229,876 - Step 5: Solve for x
x = 33,120,134,201,229,876/208,108,326.15 - Step 6: Final answer
x = 159,148,530.07
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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.