Finding the Fourth Proportional to 326,135.40, 489,203.10 and 89,477.70
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Solution
The fourth proportional to 326,135.40, 489,203.10 and 89,477.70 is: 134,216.55
Step by Step Solution
- Step 1: Write the proportion equation
326,135.40 : 489,203.10 = 89,477.70 : x - Step 2: Convert to fraction form
326,135.40/489,203.10 = 89,477.70/x - Step 3: Cross multiply
326,135.40x = 489,203.10 × 89,477.70 - Step 4: Simplify right side
326,135.40x = 43,772,768,220.87 - Step 5: Solve for x
x = 43,772,768,220.87/326,135.40 - Step 6: Final answer
x = 134,216.55
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1.5x scale
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.