Finding the Fourth Proportional to 256,018,891.65, 353,306,070.93 and 138,544,221.84
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Solution
The fourth proportional to 256,018,891.65, 353,306,070.93 and 138,544,221.84 is: 191,191,026.38
Step by Step Solution
- Step 1: Write the proportion equation
256,018,891.65 : 353,306,070.93 = 138,544,221.84 : x - Step 2: Convert to fraction form
256,018,891.65/353,306,070.93 = 138,544,221.84/x - Step 3: Cross multiply
256,018,891.65x = 353,306,070.93 × 138,544,221.84 - Step 4: Simplify right side
256,018,891.65x = 48,948,514,668,344,696 - Step 5: Solve for x
x = 48,948,514,668,344,696/256,018,891.65 - Step 6: Final answer
x = 191,191,026.38
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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.