Finding the Fourth Proportional to 387,116.20, 580,747.74 and 134,386.84
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Solution
The fourth proportional to 387,116.20, 580,747.74 and 134,386.84 is: 201,605.75
Step by Step Solution
- Step 1: Write the proportion equation
387,116.20 : 580,747.74 = 134,386.84 : x - Step 2: Convert to fraction form
387,116.20/580,747.74 = 134,386.84/x - Step 3: Cross multiply
387,116.20x = 580,747.74 × 134,386.84 - Step 4: Simplify right side
387,116.20x = 78,044,853,615.74 - Step 5: Solve for x
x = 78,044,853,615.74/387,116.20 - Step 6: Final answer
x = 201,605.75
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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.