Finding the Fourth Proportional to 282,741.12, 390,178.37 and 155,413.98
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Solution
The fourth proportional to 282,741.12, 390,178.37 and 155,413.98 is: 214,468.88
Step by Step Solution
- Step 1: Write the proportion equation
282,741.12 : 390,178.37 = 155,413.98 : x - Step 2: Convert to fraction form
282,741.12/390,178.37 = 155,413.98/x - Step 3: Cross multiply
282,741.12x = 390,178.37 × 155,413.98 - Step 4: Simplify right side
282,741.12x = 60,639,172,614.54 - Step 5: Solve for x
x = 60,639,172,614.54/282,741.12 - Step 6: Final answer
x = 214,468.88
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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.