Finding the Fourth Proportional to 311,876,461.11, 430,392,917.56 and 172,649,547.93
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Solution
The fourth proportional to 311,876,461.11, 430,392,917.56 and 172,649,547.93 is: 238,258,259.01
Step by Step Solution
- Step 1: Write the proportion equation
311,876,461.11 : 430,392,917.56 = 172,649,547.93 : x - Step 2: Convert to fraction form
311,876,461.11/430,392,917.56 = 172,649,547.93/x - Step 3: Cross multiply
311,876,461.11x = 430,392,917.56 × 172,649,547.93 - Step 4: Simplify right side
311,876,461.11x = 74,307,142,650,514,688 - Step 5: Solve for x
x = 74,307,142,650,514,688/311,876,461.11 - Step 6: Final answer
x = 238,258,259.01
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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.