Finding the Fourth Proportional to 292,486.38, 438,674.08 and 142,575.90
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Solution
The fourth proportional to 292,486.38, 438,674.08 and 142,575.90 is: 213,836.80
Step by Step Solution
- Step 1: Write the proportion equation
292,486.38 : 438,674.08 = 142,575.90 : x - Step 2: Convert to fraction form
292,486.38/438,674.08 = 142,575.90/x - Step 3: Cross multiply
292,486.38x = 438,674.08 × 142,575.90 - Step 4: Simplify right side
292,486.38x = 62,544,351,762.67 - Step 5: Solve for x
x = 62,544,351,762.67/292,486.38 - Step 6: Final answer
x = 213,836.80
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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.