Finding the Fourth Proportional to 338,835.08, 508,249.71 and 86,116.29
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Solution
The fourth proportional to 338,835.08, 508,249.71 and 86,116.29 is: 129,173.70
Step by Step Solution
- Step 1: Write the proportion equation
338,835.08 : 508,249.71 = 86,116.29 : x - Step 2: Convert to fraction form
338,835.08/508,249.71 = 86,116.29/x - Step 3: Cross multiply
338,835.08x = 508,249.71 × 86,116.29 - Step 4: Simplify right side
338,835.08x = 43,768,579,418.78 - Step 5: Solve for x
x = 43,768,579,418.78/338,835.08 - Step 6: Final answer
x = 129,173.70
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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.