Finding the Fourth Proportional to 399,383,677.99, 551,138,899.35 and 223,173,121.29
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Solution
The fourth proportional to 399,383,677.99, 551,138,899.35 and 223,173,121.29 is: 307,972,997.42
Step by Step Solution
- Step 1: Write the proportion equation
399,383,677.99 : 551,138,899.35 = 223,173,121.29 : x - Step 2: Convert to fraction form
399,383,677.99/551,138,899.35 = 223,173,121.29/x - Step 3: Cross multiply
399,383,677.99x = 551,138,899.35 × 223,173,121.29 - Step 4: Simplify right side
399,383,677.99x = 122,999,388,432,274,656 - Step 5: Solve for x
x = 122,999,388,432,274,656/399,383,677.99 - Step 6: Final answer
x = 307,972,997.42
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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.