Finding the Fourth Proportional to 286,909.40, 430,413.24 and 87,249.62
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Solution
The fourth proportional to 286,909.40, 430,413.24 and 87,249.62 is: 130,889.37
Step by Step Solution
- Step 1: Write the proportion equation
286,909.40 : 430,413.24 = 87,249.62 : x - Step 2: Convert to fraction form
286,909.40/430,413.24 = 87,249.62/x - Step 3: Cross multiply
286,909.40x = 430,413.24 × 87,249.62 - Step 4: Simplify right side
286,909.40x = 37,553,391,632.97 - Step 5: Solve for x
x = 37,553,391,632.97/286,909.40 - Step 6: Final answer
x = 130,889.37
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.