Finding the Fourth Proportional to 312,613.42, 431,423.28 and 176,653.09
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Solution
The fourth proportional to 312,613.42, 431,423.28 and 176,653.09 is: 243,790.74
Step by Step Solution
- Step 1: Write the proportion equation
312,613.42 : 431,423.28 = 176,653.09 : x - Step 2: Convert to fraction form
312,613.42/431,423.28 = 176,653.09/x - Step 3: Cross multiply
312,613.42x = 431,423.28 × 176,653.09 - Step 4: Simplify right side
312,613.42x = 76,212,255,509.94 - Step 5: Solve for x
x = 76,212,255,509.94/312,613.42 - Step 6: Final answer
x = 243,790.74
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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.