Finding the Fourth Proportional to 399,621.05, 551,634.81 and 246,721.05
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Solution
The fourth proportional to 399,621.05, 551,634.81 and 246,721.05 is: 340,572.45
Step by Step Solution
- Step 1: Write the proportion equation
399,621.05 : 551,634.81 = 246,721.05 : x - Step 2: Convert to fraction form
399,621.05/551,634.81 = 246,721.05/x - Step 3: Cross multiply
399,621.05x = 551,634.81 × 246,721.05 - Step 4: Simplify right side
399,621.05x = 136,099,919,539.75 - Step 5: Solve for x
x = 136,099,919,539.75/399,621.05 - Step 6: Final answer
x = 340,572.45
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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.