Finding the Fourth Proportional to 384,446.13, 530,551.77 and 221,102.75
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Solution
The fourth proportional to 384,446.13, 530,551.77 and 221,102.75 is: 305,131.05
Step by Step Solution
- Step 1: Write the proportion equation
384,446.13 : 530,551.77 = 221,102.75 : x - Step 2: Convert to fraction form
384,446.13/530,551.77 = 221,102.75/x - Step 3: Cross multiply
384,446.13x = 530,551.77 × 221,102.75 - Step 4: Simplify right side
384,446.13x = 117,306,452,877.26 - Step 5: Solve for x
x = 117,306,452,877.26/384,446.13 - Step 6: Final answer
x = 305,131.05
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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.