Finding the Fourth Proportional to 317,023,678.40, 437,495,845.14 and 177,791,450.84
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Solution
The fourth proportional to 317,023,678.40, 437,495,845.14 and 177,791,450.84 is: 245,353,979.35
Step by Step Solution
- Step 1: Write the proportion equation
317,023,678.40 : 437,495,845.14 = 177,791,450.84 : x - Step 2: Convert to fraction form
317,023,678.40/437,495,845.14 = 177,791,450.84/x - Step 3: Cross multiply
317,023,678.40x = 437,495,845.14 × 177,791,450.84 - Step 4: Simplify right side
317,023,678.40x = 77,783,021,043,912,560 - Step 5: Solve for x
x = 77,783,021,043,912,560/317,023,678.40 - Step 6: Final answer
x = 245,353,979.35
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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.