Finding the Fourth Proportional to 318,890,819.09, 440,069,326.77 and 172,213,103.09
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Solution
The fourth proportional to 318,890,819.09, 440,069,326.77 and 172,213,103.09 is: 237,654,080.33
Step by Step Solution
- Step 1: Write the proportion equation
318,890,819.09 : 440,069,326.77 = 172,213,103.09 : x - Step 2: Convert to fraction form
318,890,819.09/440,069,326.77 = 172,213,103.09/x - Step 3: Cross multiply
318,890,819.09x = 440,069,326.77 × 172,213,103.09 - Step 4: Simplify right side
318,890,819.09x = 75,785,704,335,588,560 - Step 5: Solve for x
x = 75,785,704,335,588,560/318,890,819.09 - Step 6: Final answer
x = 237,654,080.33
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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.