Finding the Fourth Proportional to 387,258.08, 580,392.30 and 312,413.47
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Solution
The fourth proportional to 387,258.08, 580,392.30 and 312,413.47 is: 468,221.02
Step by Step Solution
- Step 1: Write the proportion equation
387,258.08 : 580,392.30 = 312,413.47 : x - Step 2: Convert to fraction form
387,258.08/580,392.30 = 312,413.47/x - Step 3: Cross multiply
387,258.08x = 580,392.30 × 312,413.47 - Step 4: Simplify right side
387,258.08x = 181,322,372,124.85 - Step 5: Solve for x
x = 181,322,372,124.85/387,258.08 - Step 6: Final answer
x = 468,221.02
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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.