Finding the Fourth Proportional to 245,721.49, 339,106.57 and 138,298.48
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Solution
The fourth proportional to 245,721.49, 339,106.57 and 138,298.48 is: 190,858.04
Step by Step Solution
- Step 1: Write the proportion equation
245,721.49 : 339,106.57 = 138,298.48 : x - Step 2: Convert to fraction form
245,721.49/339,106.57 = 138,298.48/x - Step 3: Cross multiply
245,721.49x = 339,106.57 × 138,298.48 - Step 4: Simplify right side
245,721.49x = 46,897,923,189.01 - Step 5: Solve for x
x = 46,897,923,189.01/245,721.49 - Step 6: Final answer
x = 190,858.04
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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.