Finding the Fourth Proportional to 256,406,320.49, 353,841,035.02 and 138,931,558.09
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Solution
The fourth proportional to 256,406,320.49, 353,841,035.02 and 138,931,558.09 is: 191,725,719.62
Step by Step Solution
- Step 1: Write the proportion equation
256,406,320.49 : 353,841,035.02 = 138,931,558.09 : x - Step 2: Convert to fraction form
256,406,320.49/353,841,035.02 = 138,931,558.09/x - Step 3: Cross multiply
256,406,320.49x = 353,841,035.02 × 138,931,558.09 - Step 4: Simplify right side
256,406,320.49x = 49,159,686,310,274,920 - Step 5: Solve for x
x = 49,159,686,310,274,920/256,406,320.49 - Step 6: Final answer
x = 191,725,719.62
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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.