Finding the Fourth Proportional to 395,231.78, 545,421.18 and 213,943.65
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Solution
The fourth proportional to 395,231.78, 545,421.18 and 213,943.65 is: 295,242.95
Step by Step Solution
- Step 1: Write the proportion equation
395,231.78 : 545,421.18 = 213,943.65 : x - Step 2: Convert to fraction form
395,231.78/545,421.18 = 213,943.65/x - Step 3: Cross multiply
395,231.78x = 545,421.18 × 213,943.65 - Step 4: Simplify right side
395,231.78x = 116,689,398,036.51 - Step 5: Solve for x
x = 116,689,398,036.51/395,231.78 - Step 6: Final answer
x = 295,242.95
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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.