Finding the Fourth Proportional to 406,619.87, 561,136.74 and 225,334.79
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Solution
The fourth proportional to 406,619.87, 561,136.74 and 225,334.79 is: 310,962.74
Step by Step Solution
- Step 1: Write the proportion equation
406,619.87 : 561,136.74 = 225,334.79 : x - Step 2: Convert to fraction form
406,619.87/561,136.74 = 225,334.79/x - Step 3: Cross multiply
406,619.87x = 561,136.74 × 225,334.79 - Step 4: Simplify right side
406,619.87x = 126,443,629,469.19 - Step 5: Solve for x
x = 126,443,629,469.19/406,619.87 - Step 6: Final answer
x = 310,962.74
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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.