Finding the Fourth Proportional to 390,383.02, 585,431.09 and 134,142.92
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Solution
The fourth proportional to 390,383.02, 585,431.09 and 134,142.92 is: 201,165.09
Step by Step Solution
- Step 1: Write the proportion equation
390,383.02 : 585,431.09 = 134,142.92 : x - Step 2: Convert to fraction form
390,383.02/585,431.09 = 134,142.92/x - Step 3: Cross multiply
390,383.02x = 585,431.09 × 134,142.92 - Step 4: Simplify right side
390,383.02x = 78,531,436,206.74 - Step 5: Solve for x
x = 78,531,436,206.74/390,383.02 - Step 6: Final answer
x = 201,165.09
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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.