Finding the Fourth Proportional to 285,308.76, 393,721.26 and 157,981.62
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Solution
The fourth proportional to 285,308.76, 393,721.26 and 157,981.62 is: 218,011.96
Step by Step Solution
- Step 1: Write the proportion equation
285,308.76 : 393,721.26 = 157,981.62 : x - Step 2: Convert to fraction form
285,308.76/393,721.26 = 157,981.62/x - Step 3: Cross multiply
285,308.76x = 393,721.26 × 157,981.62 - Step 4: Simplify right side
285,308.76x = 62,200,722,483.24 - Step 5: Solve for x
x = 62,200,722,483.24/285,308.76 - Step 6: Final answer
x = 218,011.96
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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.