Finding the Fourth Proportional to 388,471,592.84, 536,074,845.68 and 212,265,637.08
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Solution
The fourth proportional to 388,471,592.84, 536,074,845.68 and 212,265,637.08 is: 292,917,862.56
Step by Step Solution
- Step 1: Write the proportion equation
388,471,592.84 : 536,074,845.68 = 212,265,637.08 : x - Step 2: Convert to fraction form
388,471,592.84/536,074,845.68 = 212,265,637.08/x - Step 3: Cross multiply
388,471,592.84x = 536,074,845.68 × 212,265,637.08 - Step 4: Simplify right side
388,471,592.84x = 113,790,268,640,827,888 - Step 5: Solve for x
x = 113,790,268,640,827,888/388,471,592.84 - Step 6: Final answer
x = 292,917,862.56
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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.