Finding the Fourth Proportional to 319,081,136.76, 440,365,821.75 and 187,033,078.08
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Solution
The fourth proportional to 319,081,136.76, 440,365,821.75 and 187,033,078.08 is: 258,125,491.09
Step by Step Solution
- Step 1: Write the proportion equation
319,081,136.76 : 440,365,821.75 = 187,033,078.08 : x - Step 2: Convert to fraction form
319,081,136.76/440,365,821.75 = 187,033,078.08/x - Step 3: Cross multiply
319,081,136.76x = 440,365,821.75 × 187,033,078.08 - Step 4: Simplify right side
319,081,136.76x = 82,362,975,123,131,120 - Step 5: Solve for x
x = 82,362,975,123,131,120/319,081,136.76 - Step 6: Final answer
x = 258,125,491.09
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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.