Finding the Fourth Proportional to 311,876,452.13, 430,392,905.16 and 172,649,538.95
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Solution
The fourth proportional to 311,876,452.13, 430,392,905.16 and 172,649,538.95 is: 238,258,246.61
Step by Step Solution
- Step 1: Write the proportion equation
311,876,452.13 : 430,392,905.16 = 172,649,538.95 : x - Step 2: Convert to fraction form
311,876,452.13/430,392,905.16 = 172,649,538.95/x - Step 3: Cross multiply
311,876,452.13x = 430,392,905.16 × 172,649,538.95 - Step 4: Simplify right side
311,876,452.13x = 74,307,136,643,225,072 - Step 5: Solve for x
x = 74,307,136,643,225,072/311,876,452.13 - Step 6: Final answer
x = 238,258,246.61
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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.