Finding the Fourth Proportional to 387,720.42, 535,102.38 and 217,954.68
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Solution
The fourth proportional to 387,720.42, 535,102.38 and 217,954.68 is: 300,804.55
Step by Step Solution
- Step 1: Write the proportion equation
387,720.42 : 535,102.38 = 217,954.68 : x - Step 2: Convert to fraction form
387,720.42/535,102.38 = 217,954.68/x - Step 3: Cross multiply
387,720.42x = 535,102.38 × 217,954.68 - Step 4: Simplify right side
387,720.42x = 116,628,068,000.14 - Step 5: Solve for x
x = 116,628,068,000.14/387,720.42 - Step 6: Final answer
x = 300,804.55
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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.