Finding the Fourth Proportional to 165,888,251.20, 248,832,376.80 and 117,515,310.40
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Solution
The fourth proportional to 165,888,251.20, 248,832,376.80 and 117,515,310.40 is: 176,272,965.60
Step by Step Solution
- Step 1: Write the proportion equation
165,888,251.20 : 248,832,376.80 = 117,515,310.40 : x - Step 2: Convert to fraction form
165,888,251.20/248,832,376.80 = 117,515,310.40/x - Step 3: Cross multiply
165,888,251.20x = 248,832,376.80 × 117,515,310.40 - Step 4: Simplify right side
165,888,251.20x = 29,241,613,997,221,760 - Step 5: Solve for x
x = 29,241,613,997,221,760/165,888,251.20 - Step 6: Final answer
x = 176,272,965.60
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.