Finding the Fourth Proportional to 387,308,521.99, 534,504,668.82 and 217,816,093.07
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Solution
The fourth proportional to 387,308,521.99, 534,504,668.82 and 217,816,093.07 is: 300,596,842.26
Step by Step Solution
- Step 1: Write the proportion equation
387,308,521.99 : 534,504,668.82 = 217,816,093.07 : x - Step 2: Convert to fraction form
387,308,521.99/534,504,668.82 = 217,816,093.07/x - Step 3: Cross multiply
387,308,521.99x = 534,504,668.82 × 217,816,093.07 - Step 4: Simplify right side
387,308,521.99x = 116,423,718,689,788,000 - Step 5: Solve for x
x = 116,423,718,689,788,000/387,308,521.99 - Step 6: Final answer
x = 300,596,842.26
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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.