Finding the Fourth Proportional to 257,696.75, 355,660.40 and 157,153.07
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Solution
The fourth proportional to 257,696.75, 355,660.40 and 157,153.07 is: 216,894.95
Step by Step Solution
- Step 1: Write the proportion equation
257,696.75 : 355,660.40 = 157,153.07 : x - Step 2: Convert to fraction form
257,696.75/355,660.40 = 157,153.07/x - Step 3: Cross multiply
257,696.75x = 355,660.40 × 157,153.07 - Step 4: Simplify right side
257,696.75x = 55,893,122,951.66 - Step 5: Solve for x
x = 55,893,122,951.66/257,696.75 - Step 6: Final answer
x = 216,894.95
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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.