Finding the Fourth Proportional to 312,437.02, 431,163.09 and 169,197.06
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Solution
The fourth proportional to 312,437.02, 431,163.09 and 169,197.06 is: 233,491.94
Step by Step Solution
- Step 1: Write the proportion equation
312,437.02 : 431,163.09 = 169,197.06 : x - Step 2: Convert to fraction form
312,437.02/431,163.09 = 169,197.06/x - Step 3: Cross multiply
312,437.02x = 431,163.09 × 169,197.06 - Step 4: Simplify right side
312,437.02x = 72,951,527,208.52 - Step 5: Solve for x
x = 72,951,527,208.52/312,437.02 - Step 6: Final answer
x = 233,491.94
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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.