Finding the Fourth Proportional to 211,163.64, 316,304.76 and 126,655.80
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Solution
The fourth proportional to 211,163.64, 316,304.76 and 126,655.80 is: 189,719.37
Step by Step Solution
- Step 1: Write the proportion equation
211,163.64 : 316,304.76 = 126,655.80 : x - Step 2: Convert to fraction form
211,163.64/316,304.76 = 126,655.80/x - Step 3: Cross multiply
211,163.64x = 316,304.76 × 126,655.80 - Step 4: Simplify right side
211,163.64x = 40,061,832,421.61 - Step 5: Solve for x
x = 40,061,832,421.61/211,163.64 - Step 6: Final answer
x = 189,719.37
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.