Finding the Fourth Proportional to 387,931.97, 535,340.96 and 218,166.09
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Solution
The fourth proportional to 387,931.97, 535,340.96 and 218,166.09 is: 301,066.30
Step by Step Solution
- Step 1: Write the proportion equation
387,931.97 : 535,340.96 = 218,166.09 : x - Step 2: Convert to fraction form
387,931.97/535,340.96 = 218,166.09/x - Step 3: Cross multiply
387,931.97x = 535,340.96 × 218,166.09 - Step 4: Simplify right side
387,931.97x = 116,793,242,969.22 - Step 5: Solve for x
x = 116,793,242,969.22/387,931.97 - Step 6: Final answer
x = 301,066.30
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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.