Finding the Fourth Proportional to 399,631.09, 551,528.36 and 218,369.88
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Solution
The fourth proportional to 399,631.09, 551,528.36 and 218,369.88 is: 301,370.90
Step by Step Solution
- Step 1: Write the proportion equation
399,631.09 : 551,528.36 = 218,369.88 : x - Step 2: Convert to fraction form
399,631.09/551,528.36 = 218,369.88/x - Step 3: Cross multiply
399,631.09x = 551,528.36 × 218,369.88 - Step 4: Simplify right side
399,631.09x = 120,437,181,789.80 - Step 5: Solve for x
x = 120,437,181,789.80/399,631.09 - Step 6: Final answer
x = 301,370.90
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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.