Finding the Fourth Proportional to 431,181.64, 646,722.91 and 115,613.74
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Solution
The fourth proportional to 431,181.64, 646,722.91 and 115,613.74 is: 173,407.32
Step by Step Solution
- Step 1: Write the proportion equation
431,181.64 : 646,722.91 = 115,613.74 : x - Step 2: Convert to fraction form
431,181.64/646,722.91 = 115,613.74/x - Step 3: Cross multiply
431,181.64x = 646,722.91 × 115,613.74 - Step 4: Simplify right side
431,181.64x = 74,770,054,368.78 - Step 5: Solve for x
x = 74,770,054,368.78/431,181.64 - Step 6: Final answer
x = 173,407.32
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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.