Finding the Fourth Proportional to 381,639.20, 572,458.80 and 97,329.20
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Solution
The fourth proportional to 381,639.20, 572,458.80 and 97,329.20 is: 145,993.80
Step by Step Solution
- Step 1: Write the proportion equation
381,639.20 : 572,458.80 = 97,329.20 : x - Step 2: Convert to fraction form
381,639.20/572,458.80 = 97,329.20/x - Step 3: Cross multiply
381,639.20x = 572,458.80 × 97,329.20 - Step 4: Simplify right side
381,639.20x = 55,716,957,036.96 - Step 5: Solve for x
x = 55,716,957,036.96/381,639.20 - Step 6: Final answer
x = 145,993.80
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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.