Finding the Fourth Proportional to 486,021.18, 670,677.74 and 268,231.80
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Solution
The fourth proportional to 486,021.18, 670,677.74 and 268,231.80 is: 370,142.51
Step by Step Solution
- Step 1: Write the proportion equation
486,021.18 : 670,677.74 = 268,231.80 : x - Step 2: Convert to fraction form
486,021.18/670,677.74 = 268,231.80/x - Step 3: Cross multiply
486,021.18x = 670,677.74 × 268,231.80 - Step 4: Simplify right side
486,021.18x = 179,897,097,420.13 - Step 5: Solve for x
x = 179,897,097,420.13/486,021.18 - Step 6: Final answer
x = 370,142.51
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1.5x scale
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.