Finding the Fourth Proportional to 292,518.65, 438,794.39 and 82,140.19
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Solution
The fourth proportional to 292,518.65, 438,794.39 and 82,140.19 is: 123,214.89
Step by Step Solution
- Step 1: Write the proportion equation
292,518.65 : 438,794.39 = 82,140.19 : x - Step 2: Convert to fraction form
292,518.65/438,794.39 = 82,140.19/x - Step 3: Cross multiply
292,518.65x = 438,794.39 × 82,140.19 - Step 4: Simplify right side
292,518.65x = 36,042,653,673.90 - Step 5: Solve for x
x = 36,042,653,673.90/292,518.65 - Step 6: Final answer
x = 123,214.89
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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.