Finding the Fourth Proportional to 222,364.19, 306,862.79 and 120,389.74
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Solution
The fourth proportional to 222,364.19, 306,862.79 and 120,389.74 is: 166,137.95
Step by Step Solution
- Step 1: Write the proportion equation
222,364.19 : 306,862.79 = 120,389.74 : x - Step 2: Convert to fraction form
222,364.19/306,862.79 = 120,389.74/x - Step 3: Cross multiply
222,364.19x = 306,862.79 × 120,389.74 - Step 4: Simplify right side
222,364.19x = 36,943,130,134.67 - Step 5: Solve for x
x = 36,943,130,134.67/222,364.19 - Step 6: Final answer
x = 166,137.95
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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.