Finding the Fourth Proportional to 406,673.75, 561,209.76 and 225,412.91
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Solution
The fourth proportional to 406,673.75, 561,209.76 and 225,412.91 is: 311,069.80
Step by Step Solution
- Step 1: Write the proportion equation
406,673.75 : 561,209.76 = 225,412.91 : x - Step 2: Convert to fraction form
406,673.75/561,209.76 = 225,412.91/x - Step 3: Cross multiply
406,673.75x = 561,209.76 × 225,412.91 - Step 4: Simplify right side
406,673.75x = 126,503,922,315.95 - Step 5: Solve for x
x = 126,503,922,315.95/406,673.75 - Step 6: Final answer
x = 311,069.80
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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.