Finding the Fourth Proportional to 321,138.12, 481,774.80 and 121,454.04
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Solution
The fourth proportional to 321,138.12, 481,774.80 and 121,454.04 is: 182,206.63
Step by Step Solution
- Step 1: Write the proportion equation
321,138.12 : 481,774.80 = 121,454.04 : x - Step 2: Convert to fraction form
321,138.12/481,774.80 = 121,454.04/x - Step 3: Cross multiply
321,138.12x = 481,774.80 × 121,454.04 - Step 4: Simplify right side
321,138.12x = 58,513,495,830.19 - Step 5: Solve for x
x = 58,513,495,830.19/321,138.12 - Step 6: Final answer
x = 182,206.63
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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.