Finding the Fourth Proportional to 280,052,843.40, 420,079,265.10 and 183,306,961.80
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Solution
The fourth proportional to 280,052,843.40, 420,079,265.10 and 183,306,961.80 is: 274,960,442.70
Step by Step Solution
- Step 1: Write the proportion equation
280,052,843.40 : 420,079,265.10 = 183,306,961.80 : x - Step 2: Convert to fraction form
280,052,843.40/420,079,265.10 = 183,306,961.80/x - Step 3: Cross multiply
280,052,843.40x = 420,079,265.10 × 183,306,961.80 - Step 4: Simplify right side
280,052,843.40x = 77,003,453,800,657,776 - Step 5: Solve for x
x = 77,003,453,800,657,776/280,052,843.40 - Step 6: Final answer
x = 274,960,442.70
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1.5x scale
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.