Finding the Fourth Proportional to 279,279,132.18, 385,405,197.84 and 161,872,561.95
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Solution
The fourth proportional to 279,279,132.18, 385,405,197.84 and 161,872,561.95 is: 223,384,132.84
Step by Step Solution
- Step 1: Write the proportion equation
279,279,132.18 : 385,405,197.84 = 161,872,561.95 : x - Step 2: Convert to fraction form
279,279,132.18/385,405,197.84 = 161,872,561.95/x - Step 3: Cross multiply
279,279,132.18x = 385,405,197.84 × 161,872,561.95 - Step 4: Simplify right side
279,279,132.18x = 62,386,526,763,207,400 - Step 5: Solve for x
x = 62,386,526,763,207,400/279,279,132.18 - Step 6: Final answer
x = 223,384,132.84
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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.