Finding the Fourth Proportional to 276,297.36, 381,263.40 and 155,436.05
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Solution
The fourth proportional to 276,297.36, 381,263.40 and 155,436.05 is: 214,486.58
Step by Step Solution
- Step 1: Write the proportion equation
276,297.36 : 381,263.40 = 155,436.05 : x - Step 2: Convert to fraction form
276,297.36/381,263.40 = 155,436.05/x - Step 3: Cross multiply
276,297.36x = 381,263.40 × 155,436.05 - Step 4: Simplify right side
276,297.36x = 59,262,074,999.25 - Step 5: Solve for x
x = 59,262,074,999.25/276,297.36 - Step 6: Final answer
x = 214,486.58
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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.