Finding the Fourth Proportional to 386,350,129.50, 533,114,787.48 and 261,174,682.62
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Solution
The fourth proportional to 386,350,129.50, 533,114,787.48 and 261,174,682.62 is: 360,388,349.29
Step by Step Solution
- Step 1: Write the proportion equation
386,350,129.50 : 533,114,787.48 = 261,174,682.62 : x - Step 2: Convert to fraction form
386,350,129.50/533,114,787.48 = 261,174,682.62/x - Step 3: Cross multiply
386,350,129.50x = 533,114,787.48 × 261,174,682.62 - Step 4: Simplify right side
386,350,129.50x = 139,236,085,420,117,760 - Step 5: Solve for x
x = 139,236,085,420,117,760/386,350,129.50 - Step 6: Final answer
x = 360,388,349.29
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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.