Finding the Fourth Proportional to 407,915.23, 611,809.62 and 208,383.07
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Solution
The fourth proportional to 407,915.23, 611,809.62 and 208,383.07 is: 312,542.31
Step by Step Solution
- Step 1: Write the proportion equation
407,915.23 : 611,809.62 = 208,383.07 : x - Step 2: Convert to fraction form
407,915.23/611,809.62 = 208,383.07/x - Step 3: Cross multiply
407,915.23x = 611,809.62 × 208,383.07 - Step 4: Simplify right side
407,915.23x = 127,490,766,871.13 - Step 5: Solve for x
x = 127,490,766,871.13/407,915.23 - Step 6: Final answer
x = 312,542.31
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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.