Finding the Fourth Proportional to 285,295.34, 393,709.47 and 157,979.18
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Solution
The fourth proportional to 285,295.34, 393,709.47 and 157,979.18 is: 218,012.32
Step by Step Solution
- Step 1: Write the proportion equation
285,295.34 : 393,709.47 = 157,979.18 : x - Step 2: Convert to fraction form
285,295.34/393,709.47 = 157,979.18/x - Step 3: Cross multiply
285,295.34x = 393,709.47 × 157,979.18 - Step 4: Simplify right side
285,295.34x = 62,197,899,228.83 - Step 5: Solve for x
x = 62,197,899,228.83/285,295.34 - Step 6: Final answer
x = 218,012.32
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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.