Finding the Fourth Proportional to 326,431.99, 489,670.48 and 136,701.32
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Solution
The fourth proportional to 326,431.99, 489,670.48 and 136,701.32 is: 205,061.40
Step by Step Solution
- Step 1: Write the proportion equation
326,431.99 : 489,670.48 = 136,701.32 : x - Step 2: Convert to fraction form
326,431.99/489,670.48 = 136,701.32/x - Step 3: Cross multiply
326,431.99x = 489,670.48 × 136,701.32 - Step 4: Simplify right side
326,431.99x = 66,938,600,297.53 - Step 5: Solve for x
x = 66,938,600,297.53/326,431.99 - Step 6: Final answer
x = 205,061.40
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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.