Finding the Fourth Proportional to 420,538.05, 580,322.23 and 239,232.92
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Solution
The fourth proportional to 420,538.05, 580,322.23 and 239,232.92 is: 330,129.89
Step by Step Solution
- Step 1: Write the proportion equation
420,538.05 : 580,322.23 = 239,232.92 : x - Step 2: Convert to fraction form
420,538.05/580,322.23 = 239,232.92/x - Step 3: Cross multiply
420,538.05x = 580,322.23 × 239,232.92 - Step 4: Simplify right side
420,538.05x = 138,832,178,124.12 - Step 5: Solve for x
x = 138,832,178,124.12/420,538.05 - Step 6: Final answer
x = 330,129.89
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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.