Finding the Fourth Proportional to 515,750.06, 711,736.26 and 286,310.72
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Solution
The fourth proportional to 515,750.06, 711,736.26 and 286,310.72 is: 395,109.45
Step by Step Solution
- Step 1: Write the proportion equation
515,750.06 : 711,736.26 = 286,310.72 : x - Step 2: Convert to fraction form
515,750.06/711,736.26 = 286,310.72/x - Step 3: Cross multiply
515,750.06x = 711,736.26 × 286,310.72 - Step 4: Simplify right side
515,750.06x = 203,777,721,050.71 - Step 5: Solve for x
x = 203,777,721,050.71/515,750.06 - Step 6: Final answer
x = 395,109.45
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1.5x scale
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.