Finding the Fourth Proportional to 309,176,321.99, 426,658,542.40 and 169,944,091.97
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Solution
The fourth proportional to 309,176,321.99, 426,658,542.40 and 169,944,091.97 is: 234,520,218.44
Step by Step Solution
- Step 1: Write the proportion equation
309,176,321.99 : 426,658,542.40 = 169,944,091.97 : x - Step 2: Convert to fraction form
309,176,321.99/426,658,542.40 = 169,944,091.97/x - Step 3: Cross multiply
309,176,321.99x = 426,658,542.40 × 169,944,091.97 - Step 4: Simplify right side
309,176,321.99x = 72,508,098,570,053,520 - Step 5: Solve for x
x = 72,508,098,570,053,520/309,176,321.99 - Step 6: Final answer
x = 234,520,218.44
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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.