Finding the Fourth Proportional to 438,369.64, 657,317.53 and 153,986.74
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Solution
The fourth proportional to 438,369.64, 657,317.53 and 153,986.74 is: 230,896.88
Step by Step Solution
- Step 1: Write the proportion equation
438,369.64 : 657,317.53 = 153,986.74 : x - Step 2: Convert to fraction form
438,369.64/657,317.53 = 153,986.74/x - Step 3: Cross multiply
438,369.64x = 657,317.53 × 153,986.74 - Step 4: Simplify right side
438,369.64x = 101,218,183,589.55 - Step 5: Solve for x
x = 101,218,183,589.55/438,369.64 - Step 6: Final answer
x = 230,896.88
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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.