Finding the Fourth Proportional to 305,405.20, 458,107.80 and 136,925.20
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Solution
The fourth proportional to 305,405.20, 458,107.80 and 136,925.20 is: 205,387.80
Step by Step Solution
- Step 1: Write the proportion equation
305,405.20 : 458,107.80 = 136,925.20 : x - Step 2: Convert to fraction form
305,405.20/458,107.80 = 136,925.20/x - Step 3: Cross multiply
305,405.20x = 458,107.80 × 136,925.20 - Step 4: Simplify right side
305,405.20x = 62,726,502,136.56 - Step 5: Solve for x
x = 62,726,502,136.56/305,405.20 - Step 6: Final answer
x = 205,387.80
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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.