Finding the Fourth Proportional to 390,163.14, 585,244.71 and 109,680.39
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Solution
The fourth proportional to 390,163.14, 585,244.71 and 109,680.39 is: 164,520.59
Step by Step Solution
- Step 1: Write the proportion equation
390,163.14 : 585,244.71 = 109,680.39 : x - Step 2: Convert to fraction form
390,163.14/585,244.71 = 109,680.39/x - Step 3: Cross multiply
390,163.14x = 585,244.71 × 109,680.39 - Step 4: Simplify right side
390,163.14x = 64,189,868,038.24 - Step 5: Solve for x
x = 64,189,868,038.24/390,163.14 - Step 6: Final answer
x = 164,520.59
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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.