Finding the Fourth Proportional to 331,639.13, 457,735.86 and 210,756.84
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Solution
The fourth proportional to 331,639.13, 457,735.86 and 210,756.84 is: 290,891.38
Step by Step Solution
- Step 1: Write the proportion equation
331,639.13 : 457,735.86 = 210,756.84 : x - Step 2: Convert to fraction form
331,639.13/457,735.86 = 210,756.84/x - Step 3: Cross multiply
331,639.13x = 457,735.86 × 210,756.84 - Step 4: Simplify right side
331,639.13x = 96,470,963,408.28 - Step 5: Solve for x
x = 96,470,963,408.28/331,639.13 - Step 6: Final answer
x = 290,891.38
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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.