Finding the Fourth Proportional to 309,118.87, 426,635.47 and 212,243.48
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Solution
The fourth proportional to 309,118.87, 426,635.47 and 212,243.48 is: 292,931.31
Step by Step Solution
- Step 1: Write the proportion equation
309,118.87 : 426,635.47 = 212,243.48 : x - Step 2: Convert to fraction form
309,118.87/426,635.47 = 212,243.48/x - Step 3: Cross multiply
309,118.87x = 426,635.47 × 212,243.48 - Step 4: Simplify right side
309,118.87x = 90,550,596,844.24 - Step 5: Solve for x
x = 90,550,596,844.24/309,118.87 - Step 6: Final answer
x = 292,931.31
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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.