Finding the Fourth Proportional to 420,143.30, 579,805.64 and 229,163.52
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Solution
The fourth proportional to 420,143.30, 579,805.64 and 229,163.52 is: 316,249.96
Step by Step Solution
- Step 1: Write the proportion equation
420,143.30 : 579,805.64 = 229,163.52 : x - Step 2: Convert to fraction form
420,143.30/579,805.64 = 229,163.52/x - Step 3: Cross multiply
420,143.30x = 579,805.64 × 229,163.52 - Step 4: Simplify right side
420,143.30x = 132,870,301,378.25 - Step 5: Solve for x
x = 132,870,301,378.25/420,143.30 - Step 6: Final answer
x = 316,249.96
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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.