Finding the Fourth Proportional to 299,656,864.80, 449,515,234.80 and 81,310,672.80
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Solution
The fourth proportional to 299,656,864.80, 449,515,234.80 and 81,310,672.80 is: 121,974,132.65
Step by Step Solution
- Step 1: Write the proportion equation
299,656,864.80 : 449,515,234.80 = 81,310,672.80 : x - Step 2: Convert to fraction form
299,656,864.80/449,515,234.80 = 81,310,672.80/x - Step 3: Cross multiply
299,656,864.80x = 449,515,234.80 × 81,310,672.80 - Step 4: Simplify right side
299,656,864.80x = 36,550,386,175,437,976 - Step 5: Solve for x
x = 36,550,386,175,437,976/299,656,864.80 - Step 6: Final answer
x = 121,974,132.65
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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.