Finding the Fourth Proportional to 403,035.21, 556,188.53 and 221,743.26
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Solution
The fourth proportional to 403,035.21, 556,188.53 and 221,743.26 is: 306,005.66
Step by Step Solution
- Step 1: Write the proportion equation
403,035.21 : 556,188.53 = 221,743.26 : x - Step 2: Convert to fraction form
403,035.21/556,188.53 = 221,743.26/x - Step 3: Cross multiply
403,035.21x = 556,188.53 × 221,743.26 - Step 4: Simplify right side
403,035.21x = 123,331,056,708.09 - Step 5: Solve for x
x = 123,331,056,708.09/403,035.21 - Step 6: Final answer
x = 306,005.66
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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.