Finding the Fourth Proportional to 229,263.75, 316,413.14 and 128,661.75
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Solution
The fourth proportional to 229,263.75, 316,413.14 and 128,661.75 is: 177,569.58
Step by Step Solution
- Step 1: Write the proportion equation
229,263.75 : 316,413.14 = 128,661.75 : x - Step 2: Convert to fraction form
229,263.75/316,413.14 = 128,661.75/x - Step 3: Cross multiply
229,263.75x = 316,413.14 × 128,661.75 - Step 4: Simplify right side
229,263.75x = 40,710,268,315.40 - Step 5: Solve for x
x = 40,710,268,315.40/229,263.75 - Step 6: Final answer
x = 177,569.58
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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.