Finding the Fourth Proportional to 256,018,964.40, 353,306,172.18 and 138,544,295.82
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Solution
The fourth proportional to 256,018,964.40, 353,306,172.18 and 138,544,295.82 is: 191,191,128.94
Step by Step Solution
- Step 1: Write the proportion equation
256,018,964.40 : 353,306,172.18 = 138,544,295.82 : x - Step 2: Convert to fraction form
256,018,964.40/353,306,172.18 = 138,544,295.82/x - Step 3: Cross multiply
256,018,964.40x = 353,306,172.18 × 138,544,295.82 - Step 4: Simplify right side
256,018,964.40x = 48,948,554,833,537,776 - Step 5: Solve for x
x = 48,948,554,833,537,776/256,018,964.40 - Step 6: Final answer
x = 191,191,128.94
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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.