Finding the Fourth Proportional to 386,714,354.16, 533,678,699.40 and 217,198,464.84
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Solution
The fourth proportional to 386,714,354.16, 533,678,699.40 and 217,198,464.84 is: 299,741,121.53
Step by Step Solution
- Step 1: Write the proportion equation
386,714,354.16 : 533,678,699.40 = 217,198,464.84 : x - Step 2: Convert to fraction form
386,714,354.16/533,678,699.40 = 217,198,464.84/x - Step 3: Cross multiply
386,714,354.16x = 533,678,699.40 × 217,198,464.84 - Step 4: Simplify right side
386,714,354.16x = 115,914,194,227,487,824 - Step 5: Solve for x
x = 115,914,194,227,487,824/386,714,354.16 - Step 6: Final answer
x = 299,741,121.53
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.