Finding the Fourth Proportional to 315,729.24, 435,683.40 and 172,458.84
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Solution
The fourth proportional to 315,729.24, 435,683.40 and 172,458.84 is: 237,980.66
Step by Step Solution
- Step 1: Write the proportion equation
315,729.24 : 435,683.40 = 172,458.84 : x - Step 2: Convert to fraction form
315,729.24/435,683.40 = 172,458.84/x - Step 3: Cross multiply
315,729.24x = 435,683.40 × 172,458.84 - Step 4: Simplify right side
315,729.24x = 75,137,453,771.26 - Step 5: Solve for x
x = 75,137,453,771.26/315,729.24 - Step 6: Final answer
x = 237,980.66
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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.