Finding the Fourth Proportional to 286,782.12, 395,759.55 and 157,722.63
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Solution
The fourth proportional to 286,782.12, 395,759.55 and 157,722.63 is: 217,657.35
Step by Step Solution
- Step 1: Write the proportion equation
286,782.12 : 395,759.55 = 157,722.63 : x - Step 2: Convert to fraction form
286,782.12/395,759.55 = 157,722.63/x - Step 3: Cross multiply
286,782.12x = 395,759.55 × 157,722.63 - Step 4: Simplify right side
286,782.12x = 62,420,236,180.98 - Step 5: Solve for x
x = 62,420,236,180.98/286,782.12 - Step 6: Final answer
x = 217,657.35
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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.