Finding the Fourth Proportional to 312,769.62, 431,622.84 and 169,529.52
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Solution
The fourth proportional to 312,769.62, 431,622.84 and 169,529.52 is: 233,951.15
Step by Step Solution
- Step 1: Write the proportion equation
312,769.62 : 431,622.84 = 169,529.52 : x - Step 2: Convert to fraction form
312,769.62/431,622.84 = 169,529.52/x - Step 3: Cross multiply
312,769.62x = 431,622.84 × 169,529.52 - Step 4: Simplify right side
312,769.62x = 73,172,812,886.24 - Step 5: Solve for x
x = 73,172,812,886.24/312,769.62 - Step 6: Final answer
x = 233,951.15
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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.