Finding the Fourth Proportional to 395,369.12, 545,648.46 and 225,628.76
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Solution
The fourth proportional to 395,369.12, 545,648.46 and 225,628.76 is: 311,389.99
Step by Step Solution
- Step 1: Write the proportion equation
395,369.12 : 545,648.46 = 225,628.76 : x - Step 2: Convert to fraction form
395,369.12/545,648.46 = 225,628.76/x - Step 3: Cross multiply
395,369.12x = 545,648.46 × 225,628.76 - Step 4: Simplify right side
395,369.12x = 123,113,985,425.71 - Step 5: Solve for x
x = 123,113,985,425.71/395,369.12 - Step 6: Final answer
x = 311,389.99
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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.