Finding the Fourth Proportional to 312,866.35, 431,728.99 and 176,881.42
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Solution
The fourth proportional to 312,866.35, 431,728.99 and 176,881.42 is: 244,081.34
Step by Step Solution
- Step 1: Write the proportion equation
312,866.35 : 431,728.99 = 176,881.42 : x - Step 2: Convert to fraction form
312,866.35/431,728.99 = 176,881.42/x - Step 3: Cross multiply
312,866.35x = 431,728.99 × 176,881.42 - Step 4: Simplify right side
312,866.35x = 76,364,836,903.82 - Step 5: Solve for x
x = 76,364,836,903.82/312,866.35 - Step 6: Final answer
x = 244,081.34
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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.