Finding the Fourth Proportional to 212,048,540.70, 318,072,811.05 and 147,551,286.30
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Solution
The fourth proportional to 212,048,540.70, 318,072,811.05 and 147,551,286.30 is: 221,326,929.45
Step by Step Solution
- Step 1: Write the proportion equation
212,048,540.70 : 318,072,811.05 = 147,551,286.30 : x - Step 2: Convert to fraction form
212,048,540.70/318,072,811.05 = 147,551,286.30/x - Step 3: Cross multiply
212,048,540.70x = 318,072,811.05 × 147,551,286.30 - Step 4: Simplify right side
212,048,540.70x = 46,932,052,407,484,360 - Step 5: Solve for x
x = 46,932,052,407,484,360/212,048,540.70 - Step 6: Final answer
x = 221,326,929.45
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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.