Finding the Fourth Proportional to 386,575,010.23, 533,473,601.12 and 212,734,754.23
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Solution
The fourth proportional to 386,575,010.23, 533,473,601.12 and 212,734,754.23 is: 293,574,008.72
Step by Step Solution
- Step 1: Write the proportion equation
386,575,010.23 : 533,473,601.12 = 212,734,754.23 : x - Step 2: Convert to fraction form
386,575,010.23/533,473,601.12 = 212,734,754.23/x - Step 3: Cross multiply
386,575,010.23x = 533,473,601.12 × 212,734,754.23 - Step 4: Simplify right side
386,575,010.23x = 113,488,375,422,456,256 - Step 5: Solve for x
x = 113,488,375,422,456,256/386,575,010.23 - Step 6: Final answer
x = 293,574,008.72
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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.