Finding the Fourth Proportional to 338,960.90, 508,439.03 and 86,239.08
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Solution
The fourth proportional to 338,960.90, 508,439.03 and 86,239.08 is: 129,358.03
Step by Step Solution
- Step 1: Write the proportion equation
338,960.90 : 508,439.03 = 86,239.08 : x - Step 2: Convert to fraction form
338,960.90/508,439.03 = 86,239.08/x - Step 3: Cross multiply
338,960.90x = 508,439.03 × 86,239.08 - Step 4: Simplify right side
338,960.90x = 43,847,313,752.10 - Step 5: Solve for x
x = 43,847,313,752.10/338,960.90 - Step 6: Final answer
x = 129,358.03
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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.