Finding the Fourth Proportional to 285,399.84, 428,103.99 and 135,655.53
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Solution
The fourth proportional to 285,399.84, 428,103.99 and 135,655.53 is: 203,485.31
Step by Step Solution
- Step 1: Write the proportion equation
285,399.84 : 428,103.99 = 135,655.53 : x - Step 2: Convert to fraction form
285,399.84/428,103.99 = 135,655.53/x - Step 3: Cross multiply
285,399.84x = 428,103.99 × 135,655.53 - Step 4: Simplify right side
285,399.84x = 58,074,673,658.56 - Step 5: Solve for x
x = 58,074,673,658.56/285,399.84 - Step 6: Final answer
x = 203,485.31
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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.