Finding the Fourth Proportional to 420,709.08, 580,653.36 and 248,619.72
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Solution
The fourth proportional to 420,709.08, 580,653.36 and 248,619.72 is: 343,139.43
Step by Step Solution
- Step 1: Write the proportion equation
420,709.08 : 580,653.36 = 248,619.72 : x - Step 2: Convert to fraction form
420,709.08/580,653.36 = 248,619.72/x - Step 3: Cross multiply
420,709.08x = 580,653.36 × 248,619.72 - Step 4: Simplify right side
420,709.08x = 144,361,875,780.26 - Step 5: Solve for x
x = 144,361,875,780.26/420,709.08 - Step 6: Final answer
x = 343,139.43
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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.