Finding the Fourth Proportional to 256,131,506.06, 353,461,592.49 and 138,656,832.50
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Solution
The fourth proportional to 256,131,506.06, 353,461,592.49 and 138,656,832.50 is: 191,346,490.63
Step by Step Solution
- Step 1: Write the proportion equation
256,131,506.06 : 353,461,592.49 = 138,656,832.50 : x - Step 2: Convert to fraction form
256,131,506.06/353,461,592.49 = 138,656,832.50/x - Step 3: Cross multiply
256,131,506.06x = 353,461,592.49 × 138,656,832.50 - Step 4: Simplify right side
256,131,506.06x = 49,009,864,825,069,192 - Step 5: Solve for x
x = 49,009,864,825,069,192/256,131,506.06 - Step 6: Final answer
x = 191,346,490.63
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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.