Finding the Fourth Proportional to 253,616.36, 349,990.80 and 140,436.68
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Solution
The fourth proportional to 253,616.36, 349,990.80 and 140,436.68 is: 193,802.74
Step by Step Solution
- Step 1: Write the proportion equation
253,616.36 : 349,990.80 = 140,436.68 : x - Step 2: Convert to fraction form
253,616.36/349,990.80 = 140,436.68/x - Step 3: Cross multiply
253,616.36x = 349,990.80 × 140,436.68 - Step 4: Simplify right side
253,616.36x = 49,151,545,982.54 - Step 5: Solve for x
x = 49,151,545,982.54/253,616.36 - Step 6: Final answer
x = 193,802.74
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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.