Finding the Fourth Proportional to 512,987.52, 769,519.93 and 153,129.94
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Solution
The fourth proportional to 512,987.52, 769,519.93 and 153,129.94 is: 229,706.45
Step by Step Solution
- Step 1: Write the proportion equation
512,987.52 : 769,519.93 = 153,129.94 : x - Step 2: Convert to fraction form
512,987.52/769,519.93 = 153,129.94/x - Step 3: Cross multiply
512,987.52x = 769,519.93 × 153,129.94 - Step 4: Simplify right side
512,987.52x = 117,836,540,709.70 - Step 5: Solve for x
x = 117,836,540,709.70/512,987.52 - Step 6: Final answer
x = 229,706.45
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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.