Finding the Fourth Proportional to 285,163.58, 393,484.55 and 157,838.87
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Solution
The fourth proportional to 285,163.58, 393,484.55 and 157,838.87 is: 217,794.84
Step by Step Solution
- Step 1: Write the proportion equation
285,163.58 : 393,484.55 = 157,838.87 : x - Step 2: Convert to fraction form
285,163.58/393,484.55 = 157,838.87/x - Step 3: Cross multiply
285,163.58x = 393,484.55 × 157,838.87 - Step 4: Simplify right side
285,163.58x = 62,107,153,977.84 - Step 5: Solve for x
x = 62,107,153,977.84/285,163.58 - Step 6: Final answer
x = 217,794.84
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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.