Finding the Fourth Proportional to 313,916.40, 471,133.80 and 145,695.60
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Solution
The fourth proportional to 313,916.40, 471,133.80 and 145,695.60 is: 218,663.70
Step by Step Solution
- Step 1: Write the proportion equation
313,916.40 : 471,133.80 = 145,695.60 : x - Step 2: Convert to fraction form
313,916.40/471,133.80 = 145,695.60/x - Step 3: Cross multiply
313,916.40x = 471,133.80 × 145,695.60 - Step 4: Simplify right side
313,916.40x = 68,642,121,671.28 - Step 5: Solve for x
x = 68,642,121,671.28/313,916.40 - Step 6: Final answer
x = 218,663.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.