Finding the Fourth Proportional to 388,586.76, 536,325.12 and 218,821.92
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Solution
The fourth proportional to 388,586.76, 536,325.12 and 218,821.92 is: 302,016.70
Step by Step Solution
- Step 1: Write the proportion equation
388,586.76 : 536,325.12 = 218,821.92 : x - Step 2: Convert to fraction form
388,586.76/536,325.12 = 218,821.92/x - Step 3: Cross multiply
388,586.76x = 536,325.12 × 218,821.92 - Step 4: Simplify right side
388,586.76x = 117,359,692,502.63 - Step 5: Solve for x
x = 117,359,692,502.63/388,586.76 - Step 6: Final answer
x = 302,016.70
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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.