Finding the Fourth Proportional to 236,830.12, 326,821.72 and 129,397.84
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Solution
The fourth proportional to 236,830.12, 326,821.72 and 129,397.84 is: 178,566.92
Step by Step Solution
- Step 1: Write the proportion equation
236,830.12 : 326,821.72 = 129,397.84 : x - Step 2: Convert to fraction form
236,830.12/326,821.72 = 129,397.84/x - Step 3: Cross multiply
236,830.12x = 326,821.72 × 129,397.84 - Step 4: Simplify right side
236,830.12x = 42,290,024,633.08 - Step 5: Solve for x
x = 42,290,024,633.08/236,830.12 - Step 6: Final answer
x = 178,566.92
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.