Finding the Fourth Proportional to 283,707.81, 391,504.99 and 154,643.44
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Solution
The fourth proportional to 283,707.81, 391,504.99 and 154,643.44 is: 213,401.52
Step by Step Solution
- Step 1: Write the proportion equation
283,707.81 : 391,504.99 = 154,643.44 : x - Step 2: Convert to fraction form
283,707.81/391,504.99 = 154,643.44/x - Step 3: Cross multiply
283,707.81x = 391,504.99 × 154,643.44 - Step 4: Simplify right side
283,707.81x = 60,543,678,430.77 - Step 5: Solve for x
x = 60,543,678,430.77/283,707.81 - Step 6: Final answer
x = 213,401.52
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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.