Finding the Fourth Proportional to 257,826.23, 355,821.63 and 143,115.65
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Solution
The fourth proportional to 257,826.23, 355,821.63 and 143,115.65 is: 197,511.49
Step by Step Solution
- Step 1: Write the proportion equation
257,826.23 : 355,821.63 = 143,115.65 : x - Step 2: Convert to fraction form
257,826.23/355,821.63 = 143,115.65/x - Step 3: Cross multiply
257,826.23x = 355,821.63 × 143,115.65 - Step 4: Simplify right side
257,826.23x = 50,923,643,861.51 - Step 5: Solve for x
x = 50,923,643,861.51/257,826.23 - Step 6: Final answer
x = 197,511.49
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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.