Finding the Fourth Proportional to 399,373,194.76, 551,189,758.61 and 229,823,948.09
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Solution
The fourth proportional to 399,373,194.76, 551,189,758.61 and 229,823,948.09 is: 317,188,554.80
Step by Step Solution
- Step 1: Write the proportion equation
399,373,194.76 : 551,189,758.61 = 229,823,948.09 : x - Step 2: Convert to fraction form
399,373,194.76/551,189,758.61 = 229,823,948.09/x - Step 3: Cross multiply
399,373,194.76x = 551,189,758.61 × 229,823,948.09 - Step 4: Simplify right side
399,373,194.76x = 126,676,606,469,375,152 - Step 5: Solve for x
x = 126,676,606,469,375,152/399,373,194.76 - Step 6: Final answer
x = 317,188,554.80
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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.