Finding the Fourth Proportional to 256,317,664.38, 353,720,075.21 and 138,842,994.62
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Solution
The fourth proportional to 256,317,664.38, 353,720,075.21 and 138,842,994.62 is: 191,604,252.54
Step by Step Solution
- Step 1: Write the proportion equation
256,317,664.38 : 353,720,075.21 = 138,842,994.62 : x - Step 2: Convert to fraction form
256,317,664.38/353,720,075.21 = 138,842,994.62/x - Step 3: Cross multiply
256,317,664.38x = 353,720,075.21 × 138,842,994.62 - Step 4: Simplify right side
256,317,664.38x = 49,111,554,496,905,208 - Step 5: Solve for x
x = 49,111,554,496,905,208/256,317,664.38 - Step 6: Final answer
x = 191,604,252.54
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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.