Finding the Fourth Proportional to 312,152.13, 430,771.42 and 176,191.81
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Solution
The fourth proportional to 312,152.13, 430,771.42 and 176,191.81 is: 243,145.53
Step by Step Solution
- Step 1: Write the proportion equation
312,152.13 : 430,771.42 = 176,191.81 : x - Step 2: Convert to fraction form
312,152.13/430,771.42 = 176,191.81/x - Step 3: Cross multiply
312,152.13x = 430,771.42 × 176,191.81 - Step 4: Simplify right side
312,152.13x = 75,898,394,338.30 - Step 5: Solve for x
x = 75,898,394,338.30/312,152.13 - Step 6: Final answer
x = 243,145.53
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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.