Finding the Fourth Proportional to 313,989.70, 471,013.35 and 103,628.10
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Solution
The fourth proportional to 313,989.70, 471,013.35 and 103,628.10 is: 155,451.66
Step by Step Solution
- Step 1: Write the proportion equation
313,989.70 : 471,013.35 = 103,628.10 : x - Step 2: Convert to fraction form
313,989.70/471,013.35 = 103,628.10/x - Step 3: Cross multiply
313,989.70x = 471,013.35 × 103,628.10 - Step 4: Simplify right side
313,989.70x = 48,810,218,535.14 - Step 5: Solve for x
x = 48,810,218,535.14/313,989.70 - Step 6: Final answer
x = 155,451.66
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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.