Finding the Fourth Proportional to 216,975,953.53, 299,451,654.66 and 121,632,213.49
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Solution
The fourth proportional to 216,975,953.53, 299,451,654.66 and 121,632,213.49 is: 167,866,378.73
Step by Step Solution
- Step 1: Write the proportion equation
216,975,953.53 : 299,451,654.66 = 121,632,213.49 : x - Step 2: Convert to fraction form
216,975,953.53/299,451,654.66 = 121,632,213.49/x - Step 3: Cross multiply
216,975,953.53x = 299,451,654.66 × 121,632,213.49 - Step 4: Simplify right side
216,975,953.53x = 36,422,967,589,406,024 - Step 5: Solve for x
x = 36,422,967,589,406,024/216,975,953.53 - Step 6: Final answer
x = 167,866,378.73
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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.