Finding the Fourth Proportional to 394,938,743.11, 545,017,286.16 and 218,723,044.26
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Solution
The fourth proportional to 394,938,743.11, 545,017,286.16 and 218,723,044.26 is: 301,838,809.39
Step by Step Solution
- Step 1: Write the proportion equation
394,938,743.11 : 545,017,286.16 = 218,723,044.26 : x - Step 2: Convert to fraction form
394,938,743.11/545,017,286.16 = 218,723,044.26/x - Step 3: Cross multiply
394,938,743.11x = 545,017,286.16 × 218,723,044.26 - Step 4: Simplify right side
394,938,743.11x = 119,207,840,001,060,496 - Step 5: Solve for x
x = 119,207,840,001,060,496/394,938,743.11 - Step 6: Final answer
x = 301,838,809.39
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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.