Finding the Fourth Proportional to 212,583,628.40, 318,875,442.60 and 161,187,378.80
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Solution
The fourth proportional to 212,583,628.40, 318,875,442.60 and 161,187,378.80 is: 241,781,068.20
Step by Step Solution
- Step 1: Write the proportion equation
212,583,628.40 : 318,875,442.60 = 161,187,378.80 : x - Step 2: Convert to fraction form
212,583,628.40/318,875,442.60 = 161,187,378.80/x - Step 3: Cross multiply
212,583,628.40x = 318,875,442.60 × 161,187,378.80 - Step 4: Simplify right side
212,583,628.40x = 51,398,696,756,383,864 - Step 5: Solve for x
x = 51,398,696,756,383,864/212,583,628.40 - Step 6: Final answer
x = 241,781,068.20
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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.