Finding the Fourth Proportional to 143,612.30, 215,418.11 and 38,431.26
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Solution
The fourth proportional to 143,612.30, 215,418.11 and 38,431.26 is: 57,646.80
Step by Step Solution
- Step 1: Write the proportion equation
143,612.30 : 215,418.11 = 38,431.26 : x - Step 2: Convert to fraction form
143,612.30/215,418.11 = 38,431.26/x - Step 3: Cross multiply
143,612.30x = 215,418.11 × 38,431.26 - Step 4: Simplify right side
143,612.30x = 8,278,789,201.96 - Step 5: Solve for x
x = 8,278,789,201.96/143,612.30 - Step 6: Final answer
x = 57,646.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.