Finding the Fourth Proportional to 265,721,105.20, 398,581,657.80 and 74,244,881.20
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Solution
The fourth proportional to 265,721,105.20, 398,581,657.80 and 74,244,881.20 is: 111,367,321.80
Step by Step Solution
- Step 1: Write the proportion equation
265,721,105.20 : 398,581,657.80 = 74,244,881.20 : x - Step 2: Convert to fraction form
265,721,105.20/398,581,657.80 = 74,244,881.20/x - Step 3: Cross multiply
265,721,105.20x = 398,581,657.80 × 74,244,881.20 - Step 4: Simplify right side
265,721,105.20x = 29,592,647,831,860,056 - Step 5: Solve for x
x = 29,592,647,831,860,056/265,721,105.20 - Step 6: Final answer
x = 111,367,321.80
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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.