Finding the Fourth Proportional to 256,318,148.04, 353,720,742.24 and 138,843,476.76
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Solution
The fourth proportional to 256,318,148.04, 353,720,742.24 and 138,843,476.76 is: 191,604,917.68
Step by Step Solution
- Step 1: Write the proportion equation
256,318,148.04 : 353,720,742.24 = 138,843,476.76 : x - Step 2: Convert to fraction form
256,318,148.04/353,720,742.24 = 138,843,476.76/x - Step 3: Cross multiply
256,318,148.04x = 353,720,742.24 × 138,843,476.76 - Step 4: Simplify right side
256,318,148.04x = 49,111,817,654,729,392 - Step 5: Solve for x
x = 49,111,817,654,729,392/256,318,148.04 - Step 6: Final answer
x = 191,604,917.68
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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.