Finding the Fourth Proportional to 217,121.58, 299,541.56 and 135,401.76
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Solution
The fourth proportional to 217,121.58, 299,541.56 and 135,401.76 is: 186,800.66
Step by Step Solution
- Step 1: Write the proportion equation
217,121.58 : 299,541.56 = 135,401.76 : x - Step 2: Convert to fraction form
217,121.58/299,541.56 = 135,401.76/x - Step 3: Cross multiply
217,121.58x = 299,541.56 × 135,401.76 - Step 4: Simplify right side
217,121.58x = 40,558,453,740.14 - Step 5: Solve for x
x = 40,558,453,740.14/217,121.58 - Step 6: Final answer
x = 186,800.66
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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.