Finding the Fourth Proportional to 208,109,351.88, 287,169,975.36 and 115,272,514.08
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Solution
The fourth proportional to 208,109,351.88, 287,169,975.36 and 115,272,514.08 is: 159,064,476.10
Step by Step Solution
- Step 1: Write the proportion equation
208,109,351.88 : 287,169,975.36 = 115,272,514.08 : x - Step 2: Convert to fraction form
208,109,351.88/287,169,975.36 = 115,272,514.08/x - Step 3: Cross multiply
208,109,351.88x = 287,169,975.36 × 115,272,514.08 - Step 4: Simplify right side
208,109,351.88x = 33,102,805,028,038,856 - Step 5: Solve for x
x = 33,102,805,028,038,856/208,109,351.88 - Step 6: Final answer
x = 159,064,476.10
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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.