Finding the Fourth Proportional to 438,743.81, 658,032.48 and 213,878.09
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Solution
The fourth proportional to 438,743.81, 658,032.48 and 213,878.09 is: 320,776.56
Step by Step Solution
- Step 1: Write the proportion equation
438,743.81 : 658,032.48 = 213,878.09 : x - Step 2: Convert to fraction form
438,743.81/658,032.48 = 213,878.09/x - Step 3: Cross multiply
438,743.81x = 658,032.48 × 213,878.09 - Step 4: Simplify right side
438,743.81x = 140,738,731,625.44 - Step 5: Solve for x
x = 140,738,731,625.44/438,743.81 - Step 6: Final answer
x = 320,776.56
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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.