Finding the Fourth Proportional to 203,642.38, 305,340.81 and 91,302.28
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Solution
The fourth proportional to 203,642.38, 305,340.81 and 91,302.28 is: 136,898.38
Step by Step Solution
- Step 1: Write the proportion equation
203,642.38 : 305,340.81 = 91,302.28 : x - Step 2: Convert to fraction form
203,642.38/305,340.81 = 91,302.28/x - Step 3: Cross multiply
203,642.38x = 305,340.81 × 91,302.28 - Step 4: Simplify right side
203,642.38x = 27,878,312,130.05 - Step 5: Solve for x
x = 27,878,312,130.05/203,642.38 - Step 6: Final answer
x = 136,898.38
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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.