Finding the Fourth Proportional to 422,876.16, 634,129.92 and 142,318.08
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Solution
The fourth proportional to 422,876.16, 634,129.92 and 142,318.08 is: 213,415.09
Step by Step Solution
- Step 1: Write the proportion equation
422,876.16 : 634,129.92 = 142,318.08 : x - Step 2: Convert to fraction form
422,876.16/634,129.92 = 142,318.08/x - Step 3: Cross multiply
422,876.16x = 634,129.92 × 142,318.08 - Step 4: Simplify right side
422,876.16x = 90,248,152,684.95 - Step 5: Solve for x
x = 90,248,152,684.95/422,876.16 - Step 6: Final answer
x = 213,415.09
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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.