Finding the Fourth Proportional to 338,729.75, 507,651.71 and 138,816.08
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Solution
The fourth proportional to 338,729.75, 507,651.71 and 138,816.08 is: 208,042.60
Step by Step Solution
- Step 1: Write the proportion equation
338,729.75 : 507,651.71 = 138,816.08 : x - Step 2: Convert to fraction form
338,729.75/507,651.71 = 138,816.08/x - Step 3: Cross multiply
338,729.75x = 507,651.71 × 138,816.08 - Step 4: Simplify right side
338,729.75x = 70,470,219,058.85 - Step 5: Solve for x
x = 70,470,219,058.85/338,729.75 - Step 6: Final answer
x = 208,042.60
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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.