Finding the Fourth Proportional to 230,381.29, 317,927.67 and 128,413.23
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Solution
The fourth proportional to 230,381.29, 317,927.67 and 128,413.23 is: 177,211.09
Step by Step Solution
- Step 1: Write the proportion equation
230,381.29 : 317,927.67 = 128,413.23 : x - Step 2: Convert to fraction form
230,381.29/317,927.67 = 128,413.23/x - Step 3: Cross multiply
230,381.29x = 317,927.67 × 128,413.23 - Step 4: Simplify right side
230,381.29x = 40,826,119,011.07 - Step 5: Solve for x
x = 40,826,119,011.07/230,381.29 - Step 6: Final answer
x = 177,211.09
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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.