Finding the Fourth Proportional to 519,742.25, 717,236.75 and 290,302.81
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Solution
The fourth proportional to 519,742.25, 717,236.75 and 290,302.81 is: 400,613.65
Step by Step Solution
- Step 1: Write the proportion equation
519,742.25 : 717,236.75 = 290,302.81 : x - Step 2: Convert to fraction form
519,742.25/717,236.75 = 290,302.81/x - Step 3: Cross multiply
519,742.25x = 717,236.75 × 290,302.81 - Step 4: Simplify right side
519,742.25x = 208,215,841,804.30 - Step 5: Solve for x
x = 208,215,841,804.30/519,742.25 - Step 6: Final answer
x = 400,613.65
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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.