Finding the Fourth Proportional to 219,714.19, 303,202.85 and 129,078.43
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Solution
The fourth proportional to 219,714.19, 303,202.85 and 129,078.43 is: 178,126.62
Step by Step Solution
- Step 1: Write the proportion equation
219,714.19 : 303,202.85 = 129,078.43 : x - Step 2: Convert to fraction form
219,714.19/303,202.85 = 129,078.43/x - Step 3: Cross multiply
219,714.19x = 303,202.85 × 129,078.43 - Step 4: Simplify right side
219,714.19x = 39,136,946,446.13 - Step 5: Solve for x
x = 39,136,946,446.13/219,714.19 - Step 6: Final answer
x = 178,126.62
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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.