Finding the Fourth Proportional to 253,781.08, 380,642.18 and 66,807.16
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Solution
The fourth proportional to 253,781.08, 380,642.18 and 66,807.16 is: 100,202.99
Step by Step Solution
- Step 1: Write the proportion equation
253,781.08 : 380,642.18 = 66,807.16 : x - Step 2: Convert to fraction form
253,781.08/380,642.18 = 66,807.16/x - Step 3: Cross multiply
253,781.08x = 380,642.18 × 66,807.16 - Step 4: Simplify right side
253,781.08x = 25,429,623,022.01 - Step 5: Solve for x
x = 25,429,623,022.01/253,781.08 - Step 6: Final answer
x = 100,202.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.