Finding the Fourth Proportional to 312,992.08, 431,934.60 and 169,756.88
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Solution
The fourth proportional to 312,992.08, 431,934.60 and 169,756.88 is: 234,267.49
Step by Step Solution
- Step 1: Write the proportion equation
312,992.08 : 431,934.60 = 169,756.88 : x - Step 2: Convert to fraction form
312,992.08/431,934.60 = 169,756.88/x - Step 3: Cross multiply
312,992.08x = 431,934.60 × 169,756.88 - Step 4: Simplify right side
312,992.08x = 73,323,870,060.05 - Step 5: Solve for x
x = 73,323,870,060.05/312,992.08 - Step 6: Final answer
x = 234,267.49
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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.