Finding the Fourth Proportional to 398,413.75, 549,810.99 and 219,565.75
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Solution
The fourth proportional to 398,413.75, 549,810.99 and 219,565.75 is: 303,000.74
Step by Step Solution
- Step 1: Write the proportion equation
398,413.75 : 549,810.99 = 219,565.75 : x - Step 2: Convert to fraction form
398,413.75/549,810.99 = 219,565.75/x - Step 3: Cross multiply
398,413.75x = 549,810.99 × 219,565.75 - Step 4: Simplify right side
398,413.75x = 120,719,662,377.59 - Step 5: Solve for x
x = 120,719,662,377.59/398,413.75 - Step 6: Final answer
x = 303,000.74
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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.