Finding the Fourth Proportional to 212,489,976.92, 318,827,595.76 and 74,414,634.05
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Solution
The fourth proportional to 212,489,976.92, 318,827,595.76 and 74,414,634.05 is: 111,654,390.52
Step by Step Solution
- Step 1: Write the proportion equation
212,489,976.92 : 318,827,595.76 = 74,414,634.05 : x - Step 2: Convert to fraction form
212,489,976.92/318,827,595.76 = 74,414,634.05/x - Step 3: Cross multiply
212,489,976.92x = 318,827,595.76 × 74,414,634.05 - Step 4: Simplify right side
212,489,976.92x = 23,725,438,864,132,760 - Step 5: Solve for x
x = 23,725,438,864,132,760/212,489,976.92 - Step 6: Final answer
x = 111,654,390.52
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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.