Finding the Fourth Proportional to 201,855.13, 278,560.08 and 112,431.13
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Solution
The fourth proportional to 201,855.13, 278,560.08 and 112,431.13 is: 155,154.96
Step by Step Solution
- Step 1: Write the proportion equation
201,855.13 : 278,560.08 = 112,431.13 : x - Step 2: Convert to fraction form
201,855.13/278,560.08 = 112,431.13/x - Step 3: Cross multiply
201,855.13x = 278,560.08 × 112,431.13 - Step 4: Simplify right side
201,855.13x = 31,318,824,567.29 - Step 5: Solve for x
x = 31,318,824,567.29/201,855.13 - Step 6: Final answer
x = 155,154.96
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1.5x scale
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.