Finding the Fourth Proportional to 278,689,008.36, 384,575,770.98 and 154,920,904.68
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Solution
The fourth proportional to 278,689,008.36, 384,575,770.98 and 154,920,904.68 is: 213,782,476.42
Step by Step Solution
- Step 1: Write the proportion equation
278,689,008.36 : 384,575,770.98 = 154,920,904.68 : x - Step 2: Convert to fraction form
278,689,008.36/384,575,770.98 = 154,920,904.68/x - Step 3: Cross multiply
278,689,008.36x = 384,575,770.98 × 154,920,904.68 - Step 4: Simplify right side
278,689,008.36x = 59,578,826,358,230,096 - Step 5: Solve for x
x = 59,578,826,358,230,096/278,689,008.36 - Step 6: Final answer
x = 213,782,476.42
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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.