Finding the Fourth Proportional to 276,276.08, 381,225.12 and 155,413.28
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Solution
The fourth proportional to 276,276.08, 381,225.12 and 155,413.28 is: 214,450.15
Step by Step Solution
- Step 1: Write the proportion equation
276,276.08 : 381,225.12 = 155,413.28 : x - Step 2: Convert to fraction form
276,276.08/381,225.12 = 155,413.28/x - Step 3: Cross multiply
276,276.08x = 381,225.12 × 155,413.28 - Step 4: Simplify right side
276,276.08x = 59,247,446,317.59 - Step 5: Solve for x
x = 59,247,446,317.59/276,276.08 - Step 6: Final answer
x = 214,450.15
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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.