Finding the Fourth Proportional to 387,917.34, 581,876.70 and 121,698.84
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Solution
The fourth proportional to 387,917.34, 581,876.70 and 121,698.84 is: 182,548.48
Step by Step Solution
- Step 1: Write the proportion equation
387,917.34 : 581,876.70 = 121,698.84 : x - Step 2: Convert to fraction form
387,917.34/581,876.70 = 121,698.84/x - Step 3: Cross multiply
387,917.34x = 581,876.70 × 121,698.84 - Step 4: Simplify right side
387,917.34x = 70,813,719,413.03 - Step 5: Solve for x
x = 70,813,719,413.03/387,917.34 - Step 6: Final answer
x = 182,548.48
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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.