Finding the Fourth Proportional to 299,379,286.80, 449,068,930.20 and 218,757,718.80
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Solution
The fourth proportional to 299,379,286.80, 449,068,930.20 and 218,757,718.80 is: 328,136,578.20
Step by Step Solution
- Step 1: Write the proportion equation
299,379,286.80 : 449,068,930.20 = 218,757,718.80 : x - Step 2: Convert to fraction form
299,379,286.80/449,068,930.20 = 218,757,718.80/x - Step 3: Cross multiply
299,379,286.80x = 449,068,930.20 × 218,757,718.80 - Step 4: Simplify right side
299,379,286.80x = 98,237,294,754,508,432 - Step 5: Solve for x
x = 98,237,294,754,508,432/299,379,286.80 - Step 6: Final answer
x = 328,136,578.20
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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.