Finding the Fourth Proportional to 391,058.80, 585,205.80 and 266,642.80
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Solution
The fourth proportional to 391,058.80, 585,205.80 and 266,642.80 is: 399,021.61
Step by Step Solution
- Step 1: Write the proportion equation
391,058.80 : 585,205.80 = 266,642.80 : x - Step 2: Convert to fraction form
391,058.80/585,205.80 = 266,642.80/x - Step 3: Cross multiply
391,058.80x = 585,205.80 × 266,642.80 - Step 4: Simplify right side
391,058.80x = 156,040,913,088.24 - Step 5: Solve for x
x = 156,040,913,088.24/391,058.80 - Step 6: Final answer
x = 399,021.61
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.