Finding the Fourth Proportional to 326,088.10, 489,132.15 and 297,219.70
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Solution
The fourth proportional to 326,088.10, 489,132.15 and 297,219.70 is: 445,829.55
Step by Step Solution
- Step 1: Write the proportion equation
326,088.10 : 489,132.15 = 297,219.70 : x - Step 2: Convert to fraction form
326,088.10/489,132.15 = 297,219.70/x - Step 3: Cross multiply
326,088.10x = 489,132.15 × 297,219.70 - Step 4: Simplify right side
326,088.10x = 145,379,710,883.36 - Step 5: Solve for x
x = 145,379,710,883.36/326,088.10 - Step 6: Final answer
x = 445,829.55
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Similar ratio
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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.