Finding the Fourth Proportional to 256,018,878.49, 353,306,052.71 and 138,544,208.69
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Solution
The fourth proportional to 256,018,878.49, 353,306,052.71 and 138,544,208.69 is: 191,191,008.20
Step by Step Solution
- Step 1: Write the proportion equation
256,018,878.49 : 353,306,052.71 = 138,544,208.69 : x - Step 2: Convert to fraction form
256,018,878.49/353,306,052.71 = 138,544,208.69/x - Step 3: Cross multiply
256,018,878.49x = 353,306,052.71 × 138,544,208.69 - Step 4: Simplify right side
256,018,878.49x = 48,948,507,498,094,376 - Step 5: Solve for x
x = 48,948,507,498,094,376/256,018,878.49 - Step 6: Final answer
x = 191,191,008.20
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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.