Finding the Fourth Proportional to 261,210,621.99, 391,872,620.05 and 79,453,076.07
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Solution
The fourth proportional to 261,210,621.99, 391,872,620.05 and 79,453,076.07 is: 119,196,856.75
Step by Step Solution
- Step 1: Write the proportion equation
261,210,621.99 : 391,872,620.05 = 79,453,076.07 : x - Step 2: Convert to fraction form
261,210,621.99/391,872,620.05 = 79,453,076.07/x - Step 3: Cross multiply
261,210,621.99x = 391,872,620.05 × 79,453,076.07 - Step 4: Simplify right side
261,210,621.99x = 31,135,485,090,582,856 - Step 5: Solve for x
x = 31,135,485,090,582,856/261,210,621.99 - Step 6: Final answer
x = 119,196,856.75
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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.