Finding the Fourth Proportional to 318,489,021.91, 439,288,451.53 and 212,589,044.02
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Solution
The fourth proportional to 318,489,021.91, 439,288,451.53 and 212,589,044.02 is: 293,221,761.30
Step by Step Solution
- Step 1: Write the proportion equation
318,489,021.91 : 439,288,451.53 = 212,589,044.02 : x - Step 2: Convert to fraction form
318,489,021.91/439,288,451.53 = 212,589,044.02/x - Step 3: Cross multiply
318,489,021.91x = 439,288,451.53 × 212,589,044.02 - Step 4: Simplify right side
318,489,021.91x = 93,387,911,959,788,800 - Step 5: Solve for x
x = 93,387,911,959,788,800/318,489,021.91 - Step 6: Final answer
x = 293,221,761.30
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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.