Finding the Fourth Proportional to 285,212.34, 427,786.11 and 74,866.68
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Solution
The fourth proportional to 285,212.34, 427,786.11 and 74,866.68 is: 112,291.52
Step by Step Solution
- Step 1: Write the proportion equation
285,212.34 : 427,786.11 = 74,866.68 : x - Step 2: Convert to fraction form
285,212.34/427,786.11 = 74,866.68/x - Step 3: Cross multiply
285,212.34x = 427,786.11 × 74,866.68 - Step 4: Simplify right side
285,212.34x = 32,026,925,805.81 - Step 5: Solve for x
x = 32,026,925,805.81/285,212.34 - Step 6: Final answer
x = 112,291.52
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1.5x scale
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.