Finding the Fourth Proportional to 387,386.98, 580,747.67 and 134,634.63
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Solution
The fourth proportional to 387,386.98, 580,747.67 and 134,634.63 is: 201,836.28
Step by Step Solution
- Step 1: Write the proportion equation
387,386.98 : 580,747.67 = 134,634.63 : x - Step 2: Convert to fraction form
387,386.98/580,747.67 = 134,634.63/x - Step 3: Cross multiply
387,386.98x = 580,747.67 × 134,634.63 - Step 4: Simplify right side
387,386.98x = 78,188,747,673.81 - Step 5: Solve for x
x = 78,188,747,673.81/387,386.98 - Step 6: Final answer
x = 201,836.28
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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.