Finding the Fourth Proportional to 221,378.62, 305,526.03 and 135,387.91
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Solution
The fourth proportional to 221,378.62, 305,526.03 and 135,387.91 is: 186,849.70
Step by Step Solution
- Step 1: Write the proportion equation
221,378.62 : 305,526.03 = 135,387.91 : x - Step 2: Convert to fraction form
221,378.62/305,526.03 = 135,387.91/x - Step 3: Cross multiply
221,378.62x = 305,526.03 × 135,387.91 - Step 4: Simplify right side
221,378.62x = 41,364,528,807.92 - Step 5: Solve for x
x = 41,364,528,807.92/221,378.62 - Step 6: Final answer
x = 186,849.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.