Finding the Fourth Proportional to 387,240,180.40, 534,375,899.80 and 211,024,419.99
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Solution
The fourth proportional to 387,240,180.40, 534,375,899.80 and 211,024,419.99 is: 291,205,226.16
Step by Step Solution
- Step 1: Write the proportion equation
387,240,180.40 : 534,375,899.80 = 211,024,419.99 : x - Step 2: Convert to fraction form
387,240,180.40/534,375,899.80 = 211,024,419.99/x - Step 3: Cross multiply
387,240,180.40x = 534,375,899.80 × 211,024,419.99 - Step 4: Simplify right side
387,240,180.40x = 112,766,364,311,929,360 - Step 5: Solve for x
x = 112,766,364,311,929,360/387,240,180.40 - Step 6: Final answer
x = 291,205,226.16
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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.