Finding the Fourth Proportional to 279,563,772.56, 419,345,658.68 and 85,475,188
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Solution
The fourth proportional to 279,563,772.56, 419,345,658.68 and 85,475,188 is: 128,212,781.95
Step by Step Solution
- Step 1: Write the proportion equation
279,563,772.56 : 419,345,658.68 = 85,475,188 : x - Step 2: Convert to fraction form
279,563,772.56/419,345,658.68 = 85,475,188/x - Step 3: Cross multiply
279,563,772.56x = 419,345,658.68 × 85,475,188 - Step 4: Simplify right side
279,563,772.56x = 35,843,649,012,656,832 - Step 5: Solve for x
x = 35,843,649,012,656,832/279,563,772.56 - Step 6: Final answer
x = 128,212,781.95
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.