Finding the Fourth Proportional to 432,961.20, 649,441.80 and 133,415.10
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Solution
The fourth proportional to 432,961.20, 649,441.80 and 133,415.10 is: 200,122.65
Step by Step Solution
- Step 1: Write the proportion equation
432,961.20 : 649,441.80 = 133,415.10 : x - Step 2: Convert to fraction form
432,961.20/649,441.80 = 133,415.10/x - Step 3: Cross multiply
432,961.20x = 649,441.80 × 133,415.10 - Step 4: Simplify right side
432,961.20x = 86,645,342,691.18 - Step 5: Solve for x
x = 86,645,342,691.18/432,961.20 - Step 6: Final answer
x = 200,122.65
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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.