Finding the Fourth Proportional to 239,699,379.74, 330,785,138.85 and 129,691,092.74
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Solution
The fourth proportional to 239,699,379.74, 330,785,138.85 and 129,691,092.74 is: 178,973,705.17
Step by Step Solution
- Step 1: Write the proportion equation
239,699,379.74 : 330,785,138.85 = 129,691,092.74 : x - Step 2: Convert to fraction form
239,699,379.74/330,785,138.85 = 129,691,092.74/x - Step 3: Cross multiply
239,699,379.74x = 330,785,138.85 × 129,691,092.74 - Step 4: Simplify right side
239,699,379.74x = 42,899,886,119,609,128 - Step 5: Solve for x
x = 42,899,886,119,609,128/239,699,379.74 - Step 6: Final answer
x = 178,973,705.17
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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.