Finding the Fourth Proportional to 226,446.84, 312,489.90 and 129,647.49
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Solution
The fourth proportional to 226,446.84, 312,489.90 and 129,647.49 is: 178,909.68
Step by Step Solution
- Step 1: Write the proportion equation
226,446.84 : 312,489.90 = 129,647.49 : x - Step 2: Convert to fraction form
226,446.84/312,489.90 = 129,647.49/x - Step 3: Cross multiply
226,446.84x = 312,489.90 × 129,647.49 - Step 4: Simplify right side
226,446.84x = 40,513,531,185.35 - Step 5: Solve for x
x = 40,513,531,185.35/226,446.84 - Step 6: Final answer
x = 178,909.68
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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.