Finding the Fourth Proportional to 239,753.19, 330,902.29 and 142,963.28
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Solution
The fourth proportional to 239,753.19, 330,902.29 and 142,963.28 is: 197,314.90
Step by Step Solution
- Step 1: Write the proportion equation
239,753.19 : 330,902.29 = 142,963.28 : x - Step 2: Convert to fraction form
239,753.19/330,902.29 = 142,963.28/x - Step 3: Cross multiply
239,753.19x = 330,902.29 × 142,963.28 - Step 4: Simplify right side
239,753.19x = 47,306,876,737.91 - Step 5: Solve for x
x = 47,306,876,737.91/239,753.19 - Step 6: Final answer
x = 197,314.90
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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.