Finding the Fourth Proportional to 257,537.66, 355,392.09 and 142,821.02
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Solution
The fourth proportional to 257,537.66, 355,392.09 and 142,821.02 is: 197,087.53
Step by Step Solution
- Step 1: Write the proportion equation
257,537.66 : 355,392.09 = 142,821.02 : x - Step 2: Convert to fraction form
257,537.66/355,392.09 = 142,821.02/x - Step 3: Cross multiply
257,537.66x = 355,392.09 × 142,821.02 - Step 4: Simplify right side
257,537.66x = 50,757,460,793.73 - Step 5: Solve for x
x = 50,757,460,793.73/257,537.66 - Step 6: Final answer
x = 197,087.53
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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.