Finding the Fourth Proportional to 238,536.97, 329,175.50 and 129,638.75
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Solution
The fourth proportional to 238,536.97, 329,175.50 and 129,638.75 is: 178,898.47
Step by Step Solution
- Step 1: Write the proportion equation
238,536.97 : 329,175.50 = 129,638.75 : x - Step 2: Convert to fraction form
238,536.97/329,175.50 = 129,638.75/x - Step 3: Cross multiply
238,536.97x = 329,175.50 × 129,638.75 - Step 4: Simplify right side
238,536.97x = 42,673,898,056.55 - Step 5: Solve for x
x = 42,673,898,056.55/238,536.97 - Step 6: Final answer
x = 178,898.47
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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.