Finding the Fourth Proportional to 282,153,239.38, 389,372,372.49 and 156,705,412.71
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Solution
The fourth proportional to 282,153,239.38, 389,372,372.49 and 156,705,412.71 is: 216,253,970.58
Step by Step Solution
- Step 1: Write the proportion equation
282,153,239.38 : 389,372,372.49 = 156,705,412.71 : x - Step 2: Convert to fraction form
282,153,239.38/389,372,372.49 = 156,705,412.71/x - Step 3: Cross multiply
282,153,239.38x = 389,372,372.49 × 156,705,412.71 - Step 4: Simplify right side
282,153,239.38x = 61,016,758,328,917,304 - Step 5: Solve for x
x = 61,016,758,328,917,304/282,153,239.38 - Step 6: Final answer
x = 216,253,970.58
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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.