Finding the Fourth Proportional to 272,629,514.80, 408,933,774.60 and 90,876,692.80
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Solution
The fourth proportional to 272,629,514.80, 408,933,774.60 and 90,876,692.80 is: 136,311,539.99
Step by Step Solution
- Step 1: Write the proportion equation
272,629,514.80 : 408,933,774.60 = 90,876,692.80 : x - Step 2: Convert to fraction form
272,629,514.80/408,933,774.60 = 90,876,692.80/x - Step 3: Cross multiply
272,629,514.80x = 408,933,774.60 × 90,876,692.80 - Step 4: Simplify right side
272,629,514.80x = 37,162,549,009,868,640 - Step 5: Solve for x
x = 37,162,549,009,868,640/272,629,514.80 - Step 6: Final answer
x = 136,311,539.99
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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.