Finding the Fourth Proportional to 386,115,999.20, 579,173,998.80 and 204,717,471.20
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Solution
The fourth proportional to 386,115,999.20, 579,173,998.80 and 204,717,471.20 is: 307,076,206.80
Step by Step Solution
- Step 1: Write the proportion equation
386,115,999.20 : 579,173,998.80 = 204,717,471.20 : x - Step 2: Convert to fraction form
386,115,999.20/579,173,998.80 = 204,717,471.20/x - Step 3: Cross multiply
386,115,999.20x = 579,173,998.80 × 204,717,471.20 - Step 4: Simplify right side
386,115,999.20x = 118,567,036,419,127,824 - Step 5: Solve for x
x = 118,567,036,419,127,824/386,115,999.20 - Step 6: Final answer
x = 307,076,206.80
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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.