Finding the Fourth Proportional to 279,279,132.68, 385,405,198.53 and 161,872,562.45
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Solution
The fourth proportional to 279,279,132.68, 385,405,198.53 and 161,872,562.45 is: 223,384,133.53
Step by Step Solution
- Step 1: Write the proportion equation
279,279,132.68 : 385,405,198.53 = 161,872,562.45 : x - Step 2: Convert to fraction form
279,279,132.68/385,405,198.53 = 161,872,562.45/x - Step 3: Cross multiply
279,279,132.68x = 385,405,198.53 × 161,872,562.45 - Step 4: Simplify right side
279,279,132.68x = 62,386,527,067,602,064 - Step 5: Solve for x
x = 62,386,527,067,602,064/279,279,132.68 - Step 6: Final answer
x = 223,384,133.53
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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.