Finding the Fourth Proportional to 312,209.67, 430,748.76 and 191,224.83
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Solution
The fourth proportional to 312,209.67, 430,748.76 and 191,224.83 is: 263,828.66
Step by Step Solution
- Step 1: Write the proportion equation
312,209.67 : 430,748.76 = 191,224.83 : x - Step 2: Convert to fraction form
312,209.67/430,748.76 = 191,224.83/x - Step 3: Cross multiply
312,209.67x = 430,748.76 × 191,224.83 - Step 4: Simplify right side
312,209.67x = 82,369,858,403.71 - Step 5: Solve for x
x = 82,369,858,403.71/312,209.67 - Step 6: Final answer
x = 263,828.66
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1.5x scale
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.