Finding the Fourth Proportional to 399,611.80, 551,464.68 and 218,326.74
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Solution
The fourth proportional to 399,611.80, 551,464.68 and 218,326.74 is: 301,291.12
Step by Step Solution
- Step 1: Write the proportion equation
399,611.80 : 551,464.68 = 218,326.74 : x - Step 2: Convert to fraction form
399,611.80/551,464.68 = 218,326.74/x - Step 3: Cross multiply
399,611.80x = 551,464.68 × 218,326.74 - Step 4: Simplify right side
399,611.80x = 120,399,485,809.54 - Step 5: Solve for x
x = 120,399,485,809.54/399,611.80 - Step 6: Final answer
x = 301,291.12
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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.