Finding the Fourth Proportional to 249,809.12, 344,729.28 and 136,629.44
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Solution
The fourth proportional to 249,809.12, 344,729.28 and 136,629.44 is: 188,544.63
Step by Step Solution
- Step 1: Write the proportion equation
249,809.12 : 344,729.28 = 136,629.44 : x - Step 2: Convert to fraction form
249,809.12/344,729.28 = 136,629.44/x - Step 3: Cross multiply
249,809.12x = 344,729.28 × 136,629.44 - Step 4: Simplify right side
249,809.12x = 47,100,168,478.00 - Step 5: Solve for x
x = 47,100,168,478.00/249,809.12 - Step 6: Final answer
x = 188,544.63
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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.