Finding the Fourth Proportional to 515,612.10, 711,533.99 and 286,156.06
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Solution
The fourth proportional to 515,612.10, 711,533.99 and 286,156.06 is: 394,889.42
Step by Step Solution
- Step 1: Write the proportion equation
515,612.10 : 711,533.99 = 286,156.06 : x - Step 2: Convert to fraction form
515,612.10/711,533.99 = 286,156.06/x - Step 3: Cross multiply
515,612.10x = 711,533.99 × 286,156.06 - Step 4: Simplify right side
515,612.10x = 203,609,763,134.48 - Step 5: Solve for x
x = 203,609,763,134.48/515,612.10 - Step 6: Final answer
x = 394,889.42
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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.