Finding the Fourth Proportional to 292,479,631.92, 403,386,545.34 and 257,121,836.82
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Solution
The fourth proportional to 292,479,631.92, 403,386,545.34 and 257,121,836.82 is: 354,621,239.11
Step by Step Solution
- Step 1: Write the proportion equation
292,479,631.92 : 403,386,545.34 = 257,121,836.82 : x - Step 2: Convert to fraction form
292,479,631.92/403,386,545.34 = 257,121,836.82/x - Step 3: Cross multiply
292,479,631.92x = 403,386,545.34 × 257,121,836.82 - Step 4: Simplify right side
292,479,631.92x = 103,719,489,486,295,008 - Step 5: Solve for x
x = 103,719,489,486,295,008/292,479,631.92 - Step 6: Final answer
x = 354,621,239.11
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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.