Finding the Fourth Proportional to 420,198.26, 579,877.79 and 229,215.65
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Solution
The fourth proportional to 420,198.26, 579,877.79 and 229,215.65 is: 316,319.88
Step by Step Solution
- Step 1: Write the proportion equation
420,198.26 : 579,877.79 = 229,215.65 : x - Step 2: Convert to fraction form
420,198.26/579,877.79 = 229,215.65/x - Step 3: Cross multiply
420,198.26x = 579,877.79 × 229,215.65 - Step 4: Simplify right side
420,198.26x = 132,917,060,509.95 - Step 5: Solve for x
x = 132,917,060,509.95/420,198.26 - Step 6: Final answer
x = 316,319.88
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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.