Finding the Fourth Proportional to 205,396.84, 307,963.36 and 85,536.88
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Solution
The fourth proportional to 205,396.84, 307,963.36 and 85,536.88 is: 128,250.39
Step by Step Solution
- Step 1: Write the proportion equation
205,396.84 : 307,963.36 = 85,536.88 : x - Step 2: Convert to fraction form
205,396.84/307,963.36 = 85,536.88/x - Step 3: Cross multiply
205,396.84x = 307,963.36 × 85,536.88 - Step 4: Simplify right side
205,396.84x = 26,342,224,968.72 - Step 5: Solve for x
x = 26,342,224,968.72/205,396.84 - Step 6: Final answer
x = 128,250.39
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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.