Finding the Fourth Proportional to 211,741,052.72, 292,225,421.34 and 128,155,182.62
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Solution
The fourth proportional to 211,741,052.72, 292,225,421.34 and 128,155,182.62 is: 176,867,932.58
Step by Step Solution
- Step 1: Write the proportion equation
211,741,052.72 : 292,225,421.34 = 128,155,182.62 : x - Step 2: Convert to fraction form
211,741,052.72/292,225,421.34 = 128,155,182.62/x - Step 3: Cross multiply
211,741,052.72x = 292,225,421.34 × 128,155,182.62 - Step 4: Simplify right side
211,741,052.72x = 37,450,202,236,573,016 - Step 5: Solve for x
x = 37,450,202,236,573,016/211,741,052.72 - Step 6: Final answer
x = 176,867,932.58
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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.