Finding the Fourth Proportional to 201,938.36, 278,663.58 and 111,294.05
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Solution
The fourth proportional to 201,938.36, 278,663.58 and 111,294.05 is: 153,579.53
Step by Step Solution
- Step 1: Write the proportion equation
201,938.36 : 278,663.58 = 111,294.05 : x - Step 2: Convert to fraction form
201,938.36/278,663.58 = 111,294.05/x - Step 3: Cross multiply
201,938.36x = 278,663.58 × 111,294.05 - Step 4: Simplify right side
201,938.36x = 31,013,597,012.38 - Step 5: Solve for x
x = 31,013,597,012.38/201,938.36 - Step 6: Final answer
x = 153,579.53
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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.