Finding the Fourth Proportional to 217,311,244.97, 299,967,523.16 and 129,205,032.46
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Solution
The fourth proportional to 217,311,244.97, 299,967,523.16 and 129,205,032.46 is: 178,349,323.67
Step by Step Solution
- Step 1: Write the proportion equation
217,311,244.97 : 299,967,523.16 = 129,205,032.46 : x - Step 2: Convert to fraction form
217,311,244.97/299,967,523.16 = 129,205,032.46/x - Step 3: Cross multiply
217,311,244.97x = 299,967,523.16 × 129,205,032.46 - Step 4: Simplify right side
217,311,244.97x = 38,757,313,566,406,696 - Step 5: Solve for x
x = 38,757,313,566,406,696/217,311,244.97 - Step 6: Final answer
x = 178,349,323.67
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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.