Finding the Fourth Proportional to 431,992.20, 647,696.70 and 229,621.80
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Solution
The fourth proportional to 431,992.20, 647,696.70 and 229,621.80 is: 344,277.70
Step by Step Solution
- Step 1: Write the proportion equation
431,992.20 : 647,696.70 = 229,621.80 : x - Step 2: Convert to fraction form
431,992.20/647,696.70 = 229,621.80/x - Step 3: Cross multiply
431,992.20x = 647,696.70 × 229,621.80 - Step 4: Simplify right side
431,992.20x = 148,725,282,108.06 - Step 5: Solve for x
x = 148,725,282,108.06/431,992.20 - Step 6: Final answer
x = 344,277.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.