Finding the Fourth Proportional to 252,745,031.20, 379,117,546.80 and 143,528,000.80
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Solution
The fourth proportional to 252,745,031.20, 379,117,546.80 and 143,528,000.80 is: 215,292,001.20
Step by Step Solution
- Step 1: Write the proportion equation
252,745,031.20 : 379,117,546.80 = 143,528,000.80 : x - Step 2: Convert to fraction form
252,745,031.20/379,117,546.80 = 143,528,000.80/x - Step 3: Cross multiply
252,745,031.20x = 379,117,546.80 × 143,528,000.80 - Step 4: Simplify right side
252,745,031.20x = 54,413,983,560,404,440 - Step 5: Solve for x
x = 54,413,983,560,404,440/252,745,031.20 - Step 6: Final answer
x = 215,292,001.20
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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.