Finding the Fourth Proportional to 313,731.85, 432,948.78 and 177,791.70
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Solution
The fourth proportional to 313,731.85, 432,948.78 and 177,791.70 is: 245,351.88
Step by Step Solution
- Step 1: Write the proportion equation
313,731.85 : 432,948.78 = 177,791.70 : x - Step 2: Convert to fraction form
313,731.85/432,948.78 = 177,791.70/x - Step 3: Cross multiply
313,731.85x = 432,948.78 × 177,791.70 - Step 4: Simplify right side
313,731.85x = 76,974,699,609.13 - Step 5: Solve for x
x = 76,974,699,609.13/313,731.85 - Step 6: Final answer
x = 245,351.88
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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.