Finding the Fourth Proportional to 390,130.28, 585,215.67 and 123,911.63
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Solution
The fourth proportional to 390,130.28, 585,215.67 and 123,911.63 is: 185,873.88
Step by Step Solution
- Step 1: Write the proportion equation
390,130.28 : 585,215.67 = 123,911.63 : x - Step 2: Convert to fraction form
390,130.28/585,215.67 = 123,911.63/x - Step 3: Cross multiply
390,130.28x = 585,215.67 × 123,911.63 - Step 4: Simplify right side
390,130.28x = 72,515,027,571.24 - Step 5: Solve for x
x = 72,515,027,571.24/390,130.28 - Step 6: Final answer
x = 185,873.88
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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.