Finding the Fourth Proportional to 280,454.24, 387,023.92 and 153,129.44
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Solution
The fourth proportional to 280,454.24, 387,023.92 and 153,129.44 is: 211,317.03
Step by Step Solution
- Step 1: Write the proportion equation
280,454.24 : 387,023.92 = 153,129.44 : x - Step 2: Convert to fraction form
280,454.24/387,023.92 = 153,129.44/x - Step 3: Cross multiply
280,454.24x = 387,023.92 × 153,129.44 - Step 4: Simplify right side
280,454.24x = 59,264,756,136.20 - Step 5: Solve for x
x = 59,264,756,136.20/280,454.24 - Step 6: Final answer
x = 211,317.03
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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.