Finding the Fourth Proportional to 391,244.88, 539,920.17 and 230,106.72
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Solution
The fourth proportional to 391,244.88, 539,920.17 and 230,106.72 is: 317,548.59
Step by Step Solution
- Step 1: Write the proportion equation
391,244.88 : 539,920.17 = 230,106.72 : x - Step 2: Convert to fraction form
391,244.88/539,920.17 = 230,106.72/x - Step 3: Cross multiply
391,244.88x = 539,920.17 × 230,106.72 - Step 4: Simplify right side
391,244.88x = 124,239,259,380.54 - Step 5: Solve for x
x = 124,239,259,380.54/391,244.88 - Step 6: Final answer
x = 317,548.59
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1.5x scale
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.