Finding the Fourth Proportional to 402,413.76, 555,361.87 and 230,385.68
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Solution
The fourth proportional to 402,413.76, 555,361.87 and 230,385.68 is: 317,949.92
Step by Step Solution
- Step 1: Write the proportion equation
402,413.76 : 555,361.87 = 230,385.68 : x - Step 2: Convert to fraction form
402,413.76/555,361.87 = 230,385.68/x - Step 3: Cross multiply
402,413.76x = 555,361.87 × 230,385.68 - Step 4: Simplify right side
402,413.76x = 127,947,422,066.02 - Step 5: Solve for x
x = 127,947,422,066.02/402,413.76 - Step 6: Final answer
x = 317,949.92
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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.