Finding the Fourth Proportional to 249,687.20, 344,569.20 and 136,511.84
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Solution
The fourth proportional to 249,687.20, 344,569.20 and 136,511.84 is: 188,386.81
Step by Step Solution
- Step 1: Write the proportion equation
249,687.20 : 344,569.20 = 136,511.84 : x - Step 2: Convert to fraction form
249,687.20/344,569.20 = 136,511.84/x - Step 3: Cross multiply
249,687.20x = 344,569.20 × 136,511.84 - Step 4: Simplify right side
249,687.20x = 47,037,775,499.33 - Step 5: Solve for x
x = 47,037,775,499.33/249,687.20 - Step 6: Final answer
x = 188,386.81
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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.