Finding the Fourth Proportional to 391,044.27, 539,515.62 and 218,936.88
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Solution
The fourth proportional to 391,044.27, 539,515.62 and 218,936.88 is: 302,062.65
Step by Step Solution
- Step 1: Write the proportion equation
391,044.27 : 539,515.62 = 218,936.88 : x - Step 2: Convert to fraction form
391,044.27/539,515.62 = 218,936.88/x - Step 3: Cross multiply
391,044.27x = 539,515.62 × 218,936.88 - Step 4: Simplify right side
391,044.27x = 118,119,866,554.07 - Step 5: Solve for x
x = 118,119,866,554.07/391,044.27 - Step 6: Final answer
x = 302,062.65
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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.