Finding the Fourth Proportional to 312,982.07, 431,875.64 and 185,632.79
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Solution
The fourth proportional to 312,982.07, 431,875.64 and 185,632.79 is: 256,149.75
Step by Step Solution
- Step 1: Write the proportion equation
312,982.07 : 431,875.64 = 185,632.79 : x - Step 2: Convert to fraction form
312,982.07/431,875.64 = 185,632.79/x - Step 3: Cross multiply
312,982.07x = 431,875.64 × 185,632.79 - Step 4: Simplify right side
312,982.07x = 80,170,279,986.24 - Step 5: Solve for x
x = 80,170,279,986.24/312,982.07 - Step 6: Final answer
x = 256,149.75
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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.