Finding the Fourth Proportional to 225,626.29, 311,372.90 and 128,845.93
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Solution
The fourth proportional to 225,626.29, 311,372.90 and 128,845.93 is: 177,812.31
Step by Step Solution
- Step 1: Write the proportion equation
225,626.29 : 311,372.90 = 128,845.93 : x - Step 2: Convert to fraction form
225,626.29/311,372.90 = 128,845.93/x - Step 3: Cross multiply
225,626.29x = 311,372.90 × 128,845.93 - Step 4: Simplify right side
225,626.29x = 40,119,130,877.30 - Step 5: Solve for x
x = 40,119,130,877.30/225,626.29 - Step 6: Final answer
x = 177,812.31
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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.