Finding the Fourth Proportional to 286,161,075.95, 394,987,921.38 and 167,115,780
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Solution
The fourth proportional to 286,161,075.95, 394,987,921.38 and 167,115,780 is: 230,669,787.48
Step by Step Solution
- Step 1: Write the proportion equation
286,161,075.95 : 394,987,921.38 = 167,115,780 : x - Step 2: Convert to fraction form
286,161,075.95/394,987,921.38 = 167,115,780/x - Step 3: Cross multiply
286,161,075.95x = 394,987,921.38 × 167,115,780 - Step 4: Simplify right side
286,161,075.95x = 66,008,714,571,997,376 - Step 5: Solve for x
x = 66,008,714,571,997,376/286,161,075.95 - Step 6: Final answer
x = 230,669,787.48
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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.