Finding the Fourth Proportional to 312,129.20, 468,193.80 and 249,921.20
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Solution
The fourth proportional to 312,129.20, 468,193.80 and 249,921.20 is: 374,881.80
Step by Step Solution
- Step 1: Write the proportion equation
312,129.20 : 468,193.80 = 249,921.20 : x - Step 2: Convert to fraction form
312,129.20/468,193.80 = 249,921.20/x - Step 3: Cross multiply
312,129.20x = 468,193.80 × 249,921.20 - Step 4: Simplify right side
312,129.20x = 117,011,556,328.56 - Step 5: Solve for x
x = 117,011,556,328.56/312,129.20 - Step 6: Final answer
x = 374,881.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.